A visual electrophysiological detection device and method

Abstract

The present application relates to a visual electrophysiological detection device and method, a visual electrophysiological detection device includes a body and a test clip, the body is provided with a test slot for providing a position for the head of the subject, the bottom of the test slot is used to set a test screen and a monitoring camera, the test clip is provided with a back pillow and a top of the head, the slot wall of the test slot is provided with a positioning slot for the top of the head to slide into, the back pillow is provided with a tightening part, the end of the top of the head away from the back pillow is provided with a telescopic component, the telescopic component is used to press against the forehead of the subject, the back pillow, the top of the head and the telescopic component are all provided with test probes, and the test probes are all pressed against the head of the subject; a visual electrophysiological detection method, including: performing IcVEP detection on the M cell layer of the subject to obtain an IcVEP test result; performing PVEP detection on the P cell layer of the subject to obtain a PVEP test result. The present application has the effect of improving the accuracy of the detection result.

Description

Technical Field

[0001] The present application relates to the field of visual physiological detection, and in particular to a visual electrophysiological detection device and method. Background Art

[0002] When the retina of the human eye is stimulated by light or graphics, photochemical and photoelectric reactions are caused in the visual cells, resulting in potential changes, forming nerve impulses, which are transmitted to bipolar cells and ganglion cells, and end at the calcarine fissure visual center in the cerebral cortex through the optic nerve, optic chiasm, optic tract, lateral geniculate body, and optic radiation. This process can be recorded by electrophysiological methods. Visual electrophysiology is a systematic examination method of the function of the retina to the visual center. It can measure human visual function in an objective and non-destructive way.

[0003] In the related art, the visual electrophysiological detection device includes a body and a test clip. The test clip is used to be worn on the head of the subject. After the subject wears the test clip, he moves his head to the test area of ​​the body to perform the test.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the test clip is easy to fall off the head of the subject during the measurement process, and the head of the subject is easy to move during the measurement, resulting in the defect of reduced accuracy of the test results. Summary of the invention

[0005] In order to improve the accuracy of the detection results, the present application provides a visual electrophysiological detection device and method.

[0006] In the first aspect, the present application provides a visual electrophysiological detection device, which adopts the following technical solution:

[0007] A visual electrophysiological detection device includes a body and a test clamp, wherein the body is provided with a test slot providing a position for a subject's head, the bottom of the test slot is used to set a test screen and a monitoring camera, the test clamp is provided with an occipital portion for pressing against the back of the subject's head and a top portion for pressing against the top of the subject's head, the slot wall of the test slot is provided with a positioning slot for the top of the head to slide into, the occipital portion is provided with a pressing portion at one end away from the top of the head, and a telescopic component is provided at one end of the top of the head away from the occipital portion, the telescopic direction of the telescopic component is parallel to the length direction of the top of the head, the telescopic component is used to press against the subject's forehead, the occipital portion, the top of the head and the telescopic component are all provided with test probes, and the test probes are all pressed against the subject's head.

[0008] By adopting the above technical solution, the cooperation between the telescopic assembly and the tightening part is conducive to reducing the situation where the test clip falls off the head, and the top of the head slides into the positioning groove, making it difficult for the head of the person being tested to move during the test, thereby improving the accuracy of the test results.

[0009] Optionally, the positioning groove passes through the side of the fuselage where the notch of the test groove is located, and a limiting mechanism for limiting the position of the top of the head in the positioning groove is provided in the positioning groove.

[0010] By adopting the above technical solution, the top of the head can easily slide into the positioning groove, and the limiting mechanism limits the position of the top of the head, further reducing the movement of the subject's head. The positioning groove and the limiting mechanism cooperate to further reduce the test clip from falling off the head, thereby improving the accuracy of the test results.

[0011] Optionally, the limiting mechanism includes a flip plate, a control component and a locking component, the bottom of the positioning slot is provided with a mounting slot, the mounting slot is close to the bottom of the test slot, the flip plate is rotatably connected to the mounting slot via a rotating shaft, and when the flip plate flips into the positioning slot, the flip plate and the part of the telescopic component close to the forehead of the subject are pressed tightly;

[0012] An installation space is provided in the fuselage, the installation space is located above and to the side of the positioning slot and communicates with the positioning slot, the control component is connected to the installation space, the top of the head slides into the positioning slot and drives the control component to work normally by abutting against the control component;

[0013] One end of the rotating shaft extends into the installation space, and the control component is connected to the end of the rotating shaft extending into the installation space, and is used to drive the rotating shaft to rotate;

[0014] The locking assembly is installed in the body and close to the bottom of the positioning groove. When the top of the head completely slides into the positioning groove, the working part of the locking assembly extends into the positioning groove and is detachably connected with the top of the head.

[0015] By adopting the above technical solution, when the top of the head slides into the positioning groove, the control component is driven to work, thereby driving the rotating shaft to rotate. The rotating rotating shaft drives the flip plate to flip into the positioning groove and press against the part of the telescopic component close to the forehead of the person being tested, which is conducive to quickly defining the position of the top of the head and pressing the telescopic component. The locking component locks the top of the head, thereby more stably defining the position of the top of the head and further reducing the possibility of the test clip falling off.

[0016] Optionally, the control assembly includes a rack, a gear and a first spring, the gear is connected to one end of the rotating shaft extending into the installation space, the rack is slidably connected to the installation space, the rack is located above the gear and meshes with the gear, the rack is connected to a control rod, one end of the control rod away from the rack is located at the connection between the positioning groove and the installation space, and a control part is provided on the side of the top of the head close to the control rod, and the control part is slidably connected to the connection between the positioning groove and the installation space for pushing the control rod;

[0017] The first spring is connected to the installation space, the first spring is close to the bottom of the test slot and is connected to one end of the rack close to the bottom of the test slot, and is used to reset the rack when the top of the head slides out of the positioning slot;

[0018] The flip plate is parallel to the notch of the installation slot in an initial state.

[0019] By adopting the above technical solution, when the top of the head slides into the positioning groove, the control part slides into the connection between the positioning groove and the installation space, thereby pushing the control rod to move, and the control rod drives the rack to move, thereby driving the gear to rotate, driving the rotating shaft to rotate, so that the flip plate flips into the positioning groove and presses against the telescopic component; when the top of the head slides away from the positioning groove, the first spring restores its deformation, thereby pushing the rack, so that the rack is reset, and the flip plate is also reset, which is conducive to more conveniently defining the top of the head.

[0020] Optionally, the locking assembly includes an electric telescopic rod and a locking rod, the electric telescopic rod is installed in the fuselage and near the middle of the bottom of the positioning groove, the locking rod is connected to the piston rod of the electric telescopic rod, the locking rod is arranged to be extended into or withdrawn from the positioning groove, and a locking groove for inserting the locking rod is provided on the side of the top of the head near the locking rod, and when the top of the head slides completely into the positioning groove, the locking rod is slidably connected to the locking groove.

[0021] By adopting the above technical solution, the locking rod can be inserted into or removed from the locking groove by controlling the electric telescopic rod, thereby facilitating a quicker and more stable definition of the position of the top of the head.

[0022] Optionally, an extension portion is provided at one end of the rack close to the first spring, the first spring is sleeved on the extension portion, a pressure sensor is provided in the installation space, the pressure sensor and the extension portion are arranged opposite to each other, a controller is provided in the fuselage, and the controller is electrically connected to the pressure sensor and the electric telescopic rod;

[0023] When the extension part contacts the pressure sensor, the top of the head is in a state of completely sliding into the positioning groove.

[0024] By adopting the above technical solution, when the extension part contacts the pressure sensor, the controller drives the piston rod of the electric telescopic rod to extend, so that the locking rod is inserted into the locking groove, thereby realizing automatic locking of the top of the head. When unlocking, it is only necessary to directly control the electric telescopic rod to shorten the piston rod of the electric telescopic rod, so that the locking rod can be pulled out of the locking groove.

[0025] Optionally, a lifting assembly is provided at the bottom of the fuselage, and the lifting assembly is used to adjust the height of the fuselage. The fuselage is provided with an adjusting assembly, and two working parts of the adjusting assembly are arranged to extend into the test slot. The working part of the adjusting assembly is provided with a supporting member for supporting the cheek and chin of the subject, and the supporting member is close to the notch of the test slot. The two working parts of the adjusting assembly are arranged to be close to or away from each other.

[0026] By adopting the above technical solution, the setting of the lifting component is conducive to adjusting the height of the fuselage so as to adapt to the heights of different subjects. By controlling the adjustment component and driving the two working parts to approach each other, the two supporting members can support the cheeks and chin of the subject, which on the one hand improves the comfort of the subject during the test, and on the other hand further limits the movement of the subject's head, thereby improving the accuracy of the test results.

[0027] Optionally, the adjustment assembly includes two opposite first cylinders and two connecting blocks, the first cylinders are installed in the fuselage, the test slot is located between the two first cylinders, the two connecting blocks are slidably connected to the slot wall of the test slot away from the positioning slot, and the two side surfaces of the two connecting blocks away from each other are respectively connected to the two piston rods of the two first cylinders, and the two first cylinders are used to drive the two connecting blocks to move closer to each other or away from each other;

[0028] The two supporting members are respectively connected to two side surfaces of the two connecting blocks which are close to each other.

[0029] By adopting the above technical solution and controlling the two first cylinders, the two supporting members can be moved closer to or farther away from each other, which is beneficial for quickly supporting the cheeks and chin of the subject and is also convenient for adjusting the supporting strength, thereby improving the comfort of the subject and reducing the movement of the subject's head.

[0030] In a second aspect, the present application provides a visual electrophysiological detection method, which adopts the following technical solution:

[0031] A visual electrophysiological detection method, comprising:

[0032] The test clip is worn on the head of the subject, and three test probes are brought into contact with the head of the subject, so as to obtain electrical signals from the brain of the subject;

[0033] Slide the top of the head into the positioning slot so that the flip plate is pressed against the telescopic assembly, and the electric telescopic rod drives the locking rod to be inserted into the locking slot. Both supporting parts support the cheeks and chin of the person being tested.

[0034] Performing IcVEP testing on the M cell layer of the subject to obtain an IcVEP test result, wherein the IcVEP test result includes an SNR value, which is used to evaluate whether the M pathway of the ganglion cell is damaged;

[0035] The PVEP test is performed on the P cell layer of the subject to obtain a PVEP test result, wherein the PVEP test result includes the amplitude of the PVEP, and the amplitude of the PVEP reflects the number of retinal ganglion cells.

[0036] By adopting the above technical solution, after the subject wears the test clip and places the subject's head in the correct position, the M cells and P cells are jointly tested, thereby effectively improving the accuracy of the test results.

[0037] Optionally, the top of the head is slid into the positioning groove so that the flip plate is pressed against the telescopic assembly, the electric telescopic rod drives the locking rod to be inserted into the locking groove, and the two supporting members both support the cheeks and chin of the subject, and then further includes:

[0038] Obtaining eye image information of the subject through a surveillance camera;

[0039] Obtaining the eye status information of the subject according to the eye image information;

[0040] Display eye status information on the display screen.

[0041] In summary, the present application includes at least one of the following beneficial technical effects:

[0042] 1. The cooperation between the telescopic assembly and the abutting part is conducive to reducing the situation where the test clip falls off the head, and the top of the head slides into the positioning groove, making it difficult for the head of the person being tested to move during the test, thereby improving the accuracy of the test results.

[0043] 2. After the subject wears the test clip and places his / her head in the correct position, a joint test of M cells and P cells is performed, thereby effectively improving the accuracy of the test results.

[0044] 3. When the extension part contacts the pressure sensor, the controller drives the piston rod of the electric telescopic rod to extend, so that the locking rod is inserted into the locking groove to automatically lock the top of the head. When unlocking, it is only necessary to directly control the electric telescopic rod to shorten the piston rod of the electric telescopic rod, so that the locking rod can be pulled out of the locking groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of a visual electrophysiological detection device in one embodiment of the present application.

[0046] Figure 2 It is a cross-sectional view of a visual electrophysiological detection device in one embodiment of the present application.

[0047] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0048] Figure 4 This is a cross-sectional view from another angle of a visual electrophysiological detection device in one embodiment of the present application.

[0049] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B.

[0050] Figure 6 yes Figure 1 A partial enlarged schematic diagram of part C in the middle.

[0051] Figure 7 This is a method flow chart of a visual electrophysiological detection method in one embodiment of the present application.

[0052] Figure 8 This is a method flow chart of a visual electrophysiological detection method in another embodiment of the present application.

[0053] Description of reference numerals: 1. body; 2. test clip; 21. back pillow; 211. pressing part; 22. top of head; 221. control part; 222. locking groove; 23. torsion spring; 3. adjustment assembly; 31. first cylinder; 32. connecting block; 4. test groove; 5. supporting member; 6. lifting assembly; 61. second cylinder; 62. horizontal plate; 7. telescopic assembly; 71. L-shaped plate; 72. second spring; 8. test probe; 9. slide groove; 10. Positioning slot; 101. Mounting slot; 11. Flip plate; 12. Control assembly; 121. Rack; 1211. Dovetail bar; 1212. Control rod; 1213. Extension portion; 122. Gear; 123. First spring; 13. Rotating shaft; 14. Installation space; 141. Dovetail slot; 142. Pressure sensor; 15. Connecting slot; 16. Locking assembly; 161. Electric telescopic rod; 162. Locking rod; 17. Controller. DETAILED DESCRIPTION

[0054] The following is combined with Figure 1-8 This application is described in further detail.

[0055] In a first aspect, the present application discloses a visual electrophysiological detection device.

[0056] Reference Figure 1A visual electrophysiological detection device includes a body 1, a test clamp 2 and an adjustment component 3. The body 1 is arranged in a horizontal rectangular cube. A test slot 4 is provided at one end of the body 1 to provide a position for the head of the subject. The bottom of the test slot 4 is used to set a test screen and a monitoring camera. The test screen is used to display the test image, and the monitoring camera is used to monitor the eyes of the subject in real time. The test clamp 2 is used to clamp the head of the subject to obtain electrical signals from the brain of the subject. The adjustment component 3 is installed in the body 1 and close to the notch of the test slot 4. The two working parts of the adjustment component 3 are arranged to extend into the test slot 4, and the working part is provided with a supporting member 5 for supporting the cheek and chin of the subject.

[0057] Reference Figure 1 In order to facilitate the body 1 to adapt to the heights of different subjects, a lifting component 6 is provided on the bottom surface of the body 1.

[0058] Reference Figure 1 The lifting assembly 6 includes a second cylinder 61 and a horizontal plate 62. The piston rod of the second cylinder 61 is vertically arranged upward, the bottom surface of the horizontal plate 62 is fixed to the top end of the piston rod of the second cylinder 61, the bottom surface of the fuselage 1 is fixed to the top surface of the horizontal plate 62, and the horizontal plate 62 is arranged in a notch away from the test slot 4.

[0059] Reference Figure 1 and Figure 2 The test clip 2 is provided with a back pillow portion 21 and a top portion 22. The back pillow portion 21 is used to press against the back of the subject's head, and the top portion 22 is used to press against the top of the subject's head. The top portion 22 and the back pillow portion 21 are hinged to each other, and a torsion spring 23 is sleeved at the hinge between the top portion 22 and the back pillow portion 21, so that the top portion 22 and the back pillow portion 21 form a test clip 2. A telescopic component 7 is provided at one end of the top portion 22 away from the back pillow portion 21. The telescopic direction of the telescopic component 7 is parallel to the length direction of the top portion 22, and the telescopic component 7 is used to press against the forehead of the subject. Test probes 8 are provided on the sides of the back pillow portion 21, the top portion 22 and the telescopic component 7 close to the subject's head. During the test, the test probes 8 are pressed against the subject's head.

[0060] Reference Figure 1 and Figure 3 The telescopic assembly 7 includes an L-shaped plate 71 and a second spring 72. A slide groove 9 is provided at one end of the top of the head 22 away from the back occipital portion 21. The depth direction of the slide groove 9 is parallel to the length direction of the top of the head 22. The long end of the L-shaped plate 71 is slidably connected to the slide groove 9. The short end of the L-shaped plate 71 is located outside the slide groove 9 and close to the forehead of the subject. The test probe 8 is located at the short end of the L-shaped plate 71 and is pressed against the forehead of the subject. The two ends of the second spring 72 are respectively fixed to the bottom of the slide groove 9 and the end of the long end of the L-shaped plate 71, and are used to pull the L-shaped plate 71 so that the L-shaped plate 71 is driven to slide toward the bottom of the slide groove 9, so that the test probe 8 can be pressed against the forehead of the subject more stably.

[0061] Reference Figure 3 A tightening portion 211 is fixed to one end of the back occipital portion 21 away from the top of the head 22. The tightening portion 211 is arranged in a strip shape and is inclined toward the back of the head of the subject. The tightening portion 211 is used to tighten the back of the subject's head. The test clip 2 is clamped on the subject's head more stably through the cooperation between the tightening portion 211 and the short end of the L-shaped plate 71.

[0062] Reference Figure 3 In order to reduce the movement of the subject's head, a positioning groove 10 for the top of the head 22 and the L-shaped plate 71 to slide into is opened on the groove wall of the test groove 4. The positioning groove 10 is close to the top surface of the fuselage 1, and the positioning groove 10 passes through the side of the fuselage 1 where the notch of the test groove 4 is located, so that the L-shaped plate 71 and the top of the head 22 can slide in. During the test, the top of the head 22 and the L-shaped plate 71 are both located in the positioning groove 10.

[0063] Reference Figure 3 In order to limit the position of the top of the head 22 in the positioning groove 10, a limiting mechanism is provided in the positioning groove 10.

[0064] Reference Figure 3 The limiting mechanism includes a flip plate 11 and a control assembly 12. The bottom of the positioning slot 10 is provided with a mounting slot 101, and the mounting slot 101 is close to the bottom of the test slot 4. The flip plate 11 is rotatably connected to the mounting slot 101 through a horizontally arranged rotating shaft 13, and the length direction of the rotating shaft 13 is perpendicular to the length direction of the positioning slot 10. The flip plate 11 is arranged in a horizontal state in the initial state and is completely located in the mounting slot 101. When the flip plate 11 flips and enters the positioning slot 10, the flip plate 11 is pressed against the part of the short end of the L-shaped plate 71 close to the forehead of the subject.

[0065] Reference Figure 4 and Figure 5 The fuselage 1 is provided with an installation space 14, which is located above and to the side of the positioning groove 10 and communicates with the positioning groove 10. One end of the rotating shaft 13 close to the installation space 14 extends into the installation space 14, the control component 12 is connected to the installation space 14, and the control component 12 is connected to the end of the rotating shaft 13 extending into the installation space 14. The top part 22 slides into the positioning groove 10 and drives the control component 12 to work normally by abutting against the control component 12, and drives the rotating shaft 13 to rotate.

[0066] Reference Figure 5The control assembly 12 includes a rack 121, a gear 122 and a first spring 123. The gear 122 is connected to one end of the rotating shaft 13 extending into the installation space 14. A dovetail groove 141 is provided on the top wall of the installation space 14. The rack 121 is arranged horizontally, and a dovetail bar 1211 is provided on the top surface of the rack 121. The dovetail bar 1211 is slidably connected in the dovetail groove 141. The rack 121 is located above the gear 122 and meshes with the gear 122. A control rod 1212 is fixed to the bottom surface of the rack 121. The end of the control rod 1212 away from the rack 121 is located at the connection between the positioning groove 10 and the installation space 14. A connecting groove 15 is provided at the end of the fuselage 1 where the test slot 4 is located. The connecting groove 15 is close to the positioning groove 10 and communicates with the positioning groove 10 and the installation space 14. A control part 221 is fixed to the side of the top part 22 near the control rod 1212. The control part 221 is slidably connected to the connection slot 15, and slides into the connection between the positioning slot 10 and the installation space 14 through the connection slot 15, and is used to push the control rod 1212. The first spring 123 is arranged horizontally, one end of which is fixed to the end of the rack 121 away from the connection slot 15, and the other end is fixed to the inner wall of the installation space 14 away from the connection slot 15, and is used to reset the rack 121 when the top part 22 slides out of the positioning slot 10.

[0067] Reference Figure 3 The limiting mechanism also includes a locking assembly 16, which is installed in the fuselage 1 and close to the bottom of the positioning groove 10. When the top of the head 22 completely slides into the positioning groove 10 and the flip plate 11 is pressed against the L-shaped plate 71, the working part of the locking assembly 16 extends into the positioning groove 10 and is detachably connected to the top of the head 22.

[0068] Reference Figure 3 The locking assembly 16 includes an electric telescopic rod 161 and a locking rod 162. The electric telescopic rod 161 is fixed in the fuselage 1 and is close to the middle of the bottom of the positioning groove 10. The locking rod 162 is connected to the piston rod of the electric telescopic rod 161. The locking rod 162 and the electric telescopic rod 161 are both vertically arranged downward, and the locking rod 162 can be extended into or withdrawn from the positioning groove 10. The top surface of the top part 22 is provided with a locking groove 222 for the locking rod 162 to be inserted. When the top part 22 completely slides into the positioning groove 10, the electric telescopic rod 161 is controlled to drive the locking rod 162 to slide and connect in the locking groove 222, thereby further limiting the position of the top part 22.

[0069] Reference Figure 3 and Figure 5In order to realize automatic locking of the top of the head 22, an extension part 1213 is fixed to one end of the rack 121 near the first spring 123, and the length direction of the extension part 1213 is parallel to the length direction of the rack 121. The first spring 123 is sleeved on the extension part 1213. A pressure sensor 142 is provided on the inner wall of the installation space 14 away from the connection groove 15. The pressure sensor 142 and the extension part 1213 are arranged opposite to each other. A controller 17 is provided in the fuselage 1, and the controller 17 is electrically connected to the pressure sensor 142 and the electric telescopic rod 161. When the extension part 1213 contacts the pressure sensor 142, the top of the head 22 is in a state of completely sliding into the positioning groove 10. The extension part 1213 contacts the pressure sensor 142, and the controller 17 drives the piston rod of the electric telescopic rod 161 to extend, thereby causing the locking rod 162 to be inserted into the locking groove 222, thereby realizing automatic locking of the top of the head 22.

[0070] Reference Figure 1 and Figure 6 The adjustment assembly 3 includes two opposite first cylinders 31 and two connecting blocks 32. The first cylinder 31 is installed in the fuselage 1. The test slot 4 is located between the two first cylinders 31. The two connecting blocks 32 are slidably connected to the inner bottom wall of the test slot 4. The two side surfaces of the two connecting blocks 32 that are far away from each other are fixedly connected to the two piston rods of the two first cylinders 31, so that the two first cylinders 31 can drive the two connecting blocks 32 to move closer to each other or away from each other. The two supporting members 5 are respectively fixedly connected to the two side surfaces of the two connecting blocks 32 that are close to each other. The supporting member 5 is made of soft elastic material to improve comfort.

[0071] In a second aspect, the present application provides a visual electrophysiological detection method, which adopts the following technical solution:

[0072] Reference Figure 7 , a visual electrophysiological detection method, comprising:

[0073] S1, wear the test clip on the head of the subject, and place three test probes in contact with the head of the subject, so as to obtain electrical signals from the brain of the subject.

[0074] Specifically, the top of the head, the L-shaped plate and the back of the head are pressed against the head of the person being tested, and the three test probes are all in contact with the head of the person being tested. Under the action of the second spring, the L-shaped plate and the pressing part cooperate with each other, so that the test clamp clamps the head of the person being tested.

[0075] S2, slide the top of the head into the positioning groove so that the flip plate is pressed against the telescopic assembly, and the electric telescopic rod drives the locking rod to insert into the locking groove, and the two supporting members both support the cheeks and chin of the subject.

[0076] Specifically, the head of the subject is moved to the notch of the test slot, the L-shaped plate and the top of the head are slid into the positioning slot, so that the flipping plate abuts against the L-shaped plate, and the extension part abuts against the pressure sensor, driving the electric telescopic rod to extend and driving the locking rod to insert into the locking slot; control the two first cylinders to drive the two supporting members to approach each other and support the cheeks and chin of the subject.

[0077] S3. Perform IcVEP detection on the M cell layer of the subject to obtain the IcVEP test result. The IcVEP test result includes the SNR value, which is used to evaluate whether the M pathway of ganglion cells is damaged.

[0078] Specifically, the IcVEP test result is displayed on the display screen electrically connected to the fuselage for the tester to consult and make a judgment. Evaluation criteria: SNR>1 Amp / r indicates that the M pathway of ganglion cells is normal and not damaged; 0.851 Amp / r < SNR ≤ 1 Amp / r indicates suspected damage to the M pathway of ganglion cells and further diagnostic evaluation is required; SNR ≤ 0.851 Amp / r indicates damage to the M pathway of ganglion cells.

[0079] S4. Perform PVEP detection on the P cell layer of the subject to obtain the PVEP test result. The PVEP test result includes the amplitude of PVEP, and the amplitude of PVEP reflects the number of retinal ganglion cells.

[0080] Specifically, the PVEP test result is displayed on the display screen. The tester consults the PVEP test result in the display screen and makes a judgment. The amplitude of PVEP can reflect the number of normal retinal ganglion cells. All lesions that affect the function of visual receptors, although the retinal ganglion cells are not damaged yet, the damage to cones and rods also reduces the information transmitted to the visual cortex. If the amplitude decreases, it reflects that there is damage to the eyes of the subject.

[0081] After the subject wears the test clip and the head of the subject is in the correct position, perform the combined detection of M cells and P cells, thereby effectively improving the accuracy of the detection result

[0082] Refer to Figure 8 , Another embodiment of a visual electrophysiological detection method is different from the above embodiment in that: after S2, it further includes:

[0083] S21. Obtain the eye image information of the subject through the monitoring camera.

[0084] Specifically, the monitoring camera takes real-time pictures of the eyes of the subject and transmits the captured eye image information to the fuselage.

[0085] S22. Obtain the eye state information of the subject according to the eye image information.

[0086] Specifically, the processor in the body performs image recognition on the eye image information based on the eye image information, and identifies the open eye state and the closed eye state of the subject.

[0087] S23, displaying the eye status information on a display screen.

[0088] Specifically, the real-time eye image information of the subject is displayed on the display screen, and the real-time eye status information of the subject is displayed on the display screen.

[0089] When it is necessary to cooperate with relevant departments to verify the confession of the testee, the above method is conducive to determining that the testee's behavior during the test meets the test standards, and effectively reduces the test errors caused by the test clip falling off or the head moving, thereby improving the accuracy of the test results. By comparing the test results with the testee's confession before the test, it is possible to accurately determine whether the testee is lying. For example: the testee's confession involves the situation of being beaten in the eye. The test results can be used to know the health of the testee's eyes, and the authenticity of the testee's confession can be determined by comparing before and after.

[0090] In summary, the implementation principle of a visual electrophysiological detection device and method of the present application is as follows: first, the height of the fuselage 1 is adjusted by the second cylinder 61, and then the test clip 2 is worn on the head of the subject, the L-shaped plate 71 and the pressing part 211 cooperate with each other, so that the three test probes 8 are pressed against the head, and the test clip 2 is not easy to fall off, and the L-shaped plate 71 and the top of the head 22 are slid into the positioning groove 10, the control part 221 slides into the connecting groove 15 and slides into the connection between the positioning groove 10 and the installation space 14, and then pushes the control rod 1212, drives the rack 121 to slide, and further drives the gear 122 to rotate, and then drives the rotating shaft 13 to rotate, so that the flip plate 11 flips into the positioning groove 10 and presses against the L-shaped plate 71, at this time, the extension part 1213 conflicts with the pressure sensor 142, and the controller 17 drives the electric telescopic rod 161 to extend, so that the locking rod 162 is inserted into the locking groove 222, thereby locking the top of the head 22. Then, the two first cylinders 31 are controlled so that the two supporting members 5 are brought close to each other, so as to quickly support the cheeks and chin of the subject and facilitate adjustment of the supporting strength, thereby improving the comfort of the subject and reducing the movement of the subject's head, thereby improving the accuracy of the test results.

[0091] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A visual electrophysiological detection device, characterized in that: The invention comprises a body (1) and a test clip (2), wherein the body (1) is provided with a test slot (4) for providing a position for the head of a person under test, the bottom of the test slot (4) is used to set a test screen and a monitoring camera, the test clip (2) is provided with a back occipital portion (21) for pressing against the back of the head of the person under test and a top portion (22) for pressing against the top of the head of the person under test, the slot wall of the test slot (4) is provided with a positioning slot (10) for the top portion (22) to slide into, the back occipital portion (21) is remote from the back occipital portion (21) and the top portion (22) is remote from the back occipital portion (21). A pressing portion (211) is provided at one end away from the top of the head (22); a telescopic component (7) is provided at one end of the top of the head (22) away from the back of the head (21); the telescopic direction of the telescopic component (7) is parallel to the length direction of the top of the head (22); the telescopic component (7) is used to press against the forehead of the person being tested; the back of the head (21), the top of the head (22) and the telescopic component (7) are all provided with test probes (8); and the test probes (8) are all pressed against the head of the person being tested; The positioning groove (10) passes through the side surface of the fuselage (1) where the notch of the test groove (4) is located, and a limiting mechanism for limiting the position of the top of the head (22) in the positioning groove (10) is provided in the positioning groove (10); The limiting mechanism comprises a flip plate (11), a control component (12) and a locking component (16); a mounting groove (101) is provided at the bottom of the positioning groove (10); the mounting groove (101) is close to the bottom of the test groove (4); the flip plate (11) is rotatably connected to the mounting groove (101) via a rotating shaft (13); when the flip plate (11) flips and enters the positioning groove (10), the flip plate (11) is pressed against a portion of the telescopic component (7) close to the forehead of the subject; An installation space (14) is provided in the body (1), the installation space (14) is located above and to the side of the positioning groove (10) and communicates with the positioning groove (10), the control component (12) is connected to the installation space (14), the top portion (22) slides into the positioning groove (10) and abuts against the control component (12) to drive the control component (12) to work normally; One end of the rotating shaft (13) extends into the installation space (14), and the control component (12) is connected to the end of the rotating shaft (13) extending into the installation space (14) to drive the rotating shaft (13) to rotate; The locking assembly (16) is installed in the body (1) and close to the bottom of the positioning groove (10); when the top portion (22) completely slides into the positioning groove (10), the working portion of the locking assembly (16) extends into the positioning groove (10) and is detachably connected to the top portion (22); A lifting assembly (6) is provided at the bottom of the fuselage (1), and the lifting assembly (6) is used to adjust the height of the fuselage (1).

2. A visual electrophysiological detection device according to claim 1, characterized in that: The control assembly (12) comprises a rack (121), a gear (122) and a first spring (123); the gear (122) is connected to one end of the rotating shaft (13) extending into the installation space (14); the rack (121) is slidably connected to the installation space (14); the rack (121) is located above the gear (122) and meshes with the gear (122); the rack (121) is connected to a control rod (1212); one end of the control rod (1212) away from the rack (121) is located at the connection between the positioning groove (10) and the installation space (14); a control portion (221) is provided on the side of the top portion (22) close to the control rod (1212); the control portion (221) is slidably connected to the connection between the positioning groove (10) and the installation space (14) and is used to push the control rod (1212); The first spring (123) is connected to the installation space (14); the first spring (123) is close to the bottom of the test slot (4) and is connected to one end of the rack (121) close to the bottom of the test slot (4); and is used to reset the rack (121) when the top of the head (22) slides out of the positioning slot (10); the flip plate (11) is parallel to the notch of the installation slot (101) in the initial state.

3. A visual electrophysiological detection device according to claim 2, characterized in that: The locking assembly (16) comprises an electric telescopic rod (161) and a locking rod (162); the electric telescopic rod (161) is installed in the body (1) and close to the middle of the bottom of the positioning groove (10); the locking rod (162) is connected to the piston rod of the electric telescopic rod (161); the locking rod (162) is arranged to be extended into or withdrawn from the positioning groove (10); a locking groove (222) for inserting the locking rod (162) is provided on the side of the head top (22) close to the locking rod (162); when the head top (22) completely slides into the positioning groove (10), the locking rod (162) is slidably connected in the locking groove (222).

4. A visual electrophysiological detection device according to claim 3, characterized in that: An extension portion (1213) is provided at one end of the rack (121) close to the first spring (123), the first spring (123) is sleeved on the extension portion (1213), a pressure sensor (142) is provided in the installation space (14), the pressure sensor (142) and the extension portion (1213) are arranged opposite to each other, a controller (17) is provided in the body (1), the controller (17) is electrically connected to the pressure sensor (142) and the electric telescopic rod (161); when the extension portion (1213) contacts the pressure sensor (142), the top portion (22) is in a state of completely sliding into the positioning groove (10).

5. A visual electrophysiological detection device according to claim 1, characterized in that: The body (1) is provided with an adjustment component (3), and the two working parts of the adjustment component (3) are both arranged to extend into the test slot (4). The working part of the adjustment component (3) is provided with a supporting member (5) for supporting the cheek and chin of the subject, and the supporting member (5) is close to the notch of the test slot (4). The two working parts of the adjustment component (3) are arranged to be close to or away from each other.

6. A visual electrophysiological detection device according to claim 5, characterized in that: The adjustment assembly (3) comprises two opposite first cylinders (31) and two connecting blocks (32), wherein the first cylinder (31) is installed in the body (1), the test slot (4) is located between the two first cylinders (31), the two connecting blocks (32) are slidably connected to the slot wall of the test slot (4) away from the positioning slot (10), and the two side surfaces of the two connecting blocks (32) away from each other are respectively connected to the two piston rods of the two first cylinders (31), and the two first cylinders (31) are used to drive the two connecting blocks (32) to move closer to each other or away from each other; and the two supporting members (5) are respectively connected to the two side surfaces of the two connecting blocks (32) close to each other.

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