An electroencephalogram recording box and a dynamic electroencephalogram system

Abstract

The utility model belongs to the field of electronic equipment, concretely relates to a kind of electroencephalogram recording box, dynamic electroencephalogram system, comprising: the box body of cuboid;The inside of box body is provided with battery compartment, circuit board and display screen on circuit board;The front of box body is provided with the opening for exposing display screen;The back of box body is provided with the battery compartment cover plate for covering battery compartment;The first side of box body is provided with the pin board connected with circuit board, for connecting several single-channel electrodes, to collect electroencephalogram signal;The second side of box body is provided with the collection interface connected with circuit board, for connecting electroencephalogram cap, to collect electroencephalogram signal;The third side of box body is provided with the communication interface electric connection connected with circuit board, for transmitting electroencephalogram signal;The fourth side of box body is provided with locking member, to lock battery compartment cover plate.The utility model utilizes each face of box body respectively configures the interface of each function, effectively satisfies the small size, lightweight demand of electroencephalogram recording equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electronic devices, specifically relating to an electroencephalogram (EEG) recording box and a dynamic EEG system. Background Technology

[0002] Ambulatory EEG (AEEG) is a portable technology for continuous long-term monitoring of brain activity. It typically collects brain signals during patients’ free-movement states in their daily environment (such as at home, at work, or while sleeping). Therefore, the recording device for ambulatory EEG must be both portable and have stable battery life for long-term continuous monitoring.

[0003] Because dynamic EEG recording devices typically require circuit boards, battery compartments, multiple electrode acquisition channels, displays, and interfaces for power supply and communication, existing recording devices in this field are not only large in size and have a small number of acquisition channels, but also have short battery life and cumbersome battery replacement operations, failing to meet the demand for lightweight and portable devices for long-term clinical EEG monitoring. Utility Model Content

[0004] This invention provides an EEG recording box and a dynamic EEG system to reduce the size of EEG recording devices.

[0005] To address the aforementioned technical problems, this utility model provides an electroencephalogram (EEG) recording box, comprising: a rectangular box body; an internal battery compartment, a circuit board, and a display screen located on the circuit board; an opening on the front of the box body for exposing the display screen; a battery compartment cover on the back of the box body for covering the battery compartment; a pin plate connected to the circuit board on a first side of the box body for connecting several single-channel electrodes to collect EEG signals; a data acquisition interface connected to the circuit board on a second side of the box body for connecting an EEG cap to collect EEG signals; a communication interface electrically connected to the circuit board on a third side of the box body for transmitting EEG signals; and a locking member on a fourth side of the box body for locking the battery compartment cover.

[0006] Furthermore, the acquisition interface and the communication interface are positioned opposite each other.

[0007] Furthermore, a bottom cover is provided on the back of the box body, and a partial recess of the bottom cover forms the battery compartment, so that the battery compartment is located between the battery compartment cover plate and the bottom cover.

[0008] Furthermore, the bottom cover is also provided with a sliding space between the battery compartment cover and the bottom cover to accommodate the locking member; the locking member includes: a slider suitable for horizontal sliding; a plurality of clips disposed on the slider; and a cover plate locking hook disposed on the bottom cover and corresponding to the clips one by one; wherein, the horizontal sliding of the slider is such that the clips abut against the cover plate locking hooks, thereby locking the battery compartment cover and the bottom cover; the reverse sliding of the slider is such that the clips disengage from the cover plate locking hooks, thereby unlocking the battery compartment cover and the bottom cover.

[0009] Furthermore, the cover plate locking hook is set downward and bent to form a locking groove facing the horizontal direction; when the battery compartment cover plate is locked with the bottom cover, the locking member is engaged in the locking groove; when the battery compartment cover plate is unlocked from the bottom cover, the locking member leaves the locking groove and is in the sliding space.

[0010] Furthermore, the locking component also includes: a spring plunger located on the slider; a plunger engaging portion located on the battery compartment cover; a first groove and a second groove located sequentially on the plunger engaging portion; wherein, when the battery compartment cover is locked to the bottom cover, the top ball of the spring plunger is located in the first groove; when the battery compartment cover is unlocked from the bottom cover, the top ball of the spring plunger is located in the second groove.

[0011] Furthermore, the battery compartment cover is provided with an operating hole; the slider is provided with an operating boss protruding from the operating hole, so as to slide the slider through the operating boss.

[0012] Furthermore, a button is provided on the front of the box, which is connected to the circuit board.

[0013] Secondly, this utility model provides a dynamic EEG system, comprising: the EEG recording box; a plurality of single-channel electrodes connected to the pin plate to transmit EEG signals; an EEG cap connected to the acquisition interface to transmit EEG signals; an event button electrically connected to the communication interface for marking event nodes; and a host computer electrically connected to the communication interface for analyzing EEG data.

[0014] Furthermore, the circuit board includes: a signal receiving circuit electrically connected to the electrode pin board and the acquisition interface to receive EEG signals, and electrically connected to the communication interface to receive event nodes; a signal processing circuit connected to the signal receiving circuit for amplifying, filtering, and performing analog-to-digital conversion on the received EEG signals to obtain EEG data; a memory card connected to the signal processing circuit for storing EEG data; and a data transmission circuit connected to the memory card for transmitting EEG data to the host computer through the communication interface.

[0015] The beneficial effects of this utility model are: This utility model discloses an EEG recording box by incorporating a battery compartment, circuit board, and display screen inside the box. The display screen is exposed on the front of the box, while a bottom cover and a battery compartment cover are located on the back. Furthermore, the four sides of the box are equipped with pin plates for connecting numerous electrodes, an interface for connecting an EEG cap, a communication interface for transmitting EEG signals, and locking mechanisms for locking and unlocking the battery compartment cover. This efficient use of the rectangular box's various sides to accommodate interfaces for data acquisition, power supply, display, and communication effectively meets the requirements for small size and lightweight EEG recording devices. Other features and advantages of this utility model will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the utility model. To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is an exploded view of the electroencephalogram (EEG) recording box of this utility model.

[0018] Figure 2 This is a rear view structural diagram of the top cover of this utility model.

[0019] Figure 3 This is a schematic diagram of the main structure of the bottom cover of this utility model.

[0020] Figure 4 This is a rear view of the bottom cover of this utility model.

[0021] Figure 5 This is a schematic diagram of the slider of this utility model.

[0022] Figure 6 This is a front view of the battery compartment cover and slider of this utility model in their mating state.

[0023] Figure 7 This is a bottom view of the unlocked state of the EEG recording box of this utility model.

[0024] Figure 8 yes Figure 7 A cross-sectional view along the AA direction.

[0025] Figure 9 yes Figure 7 Cross-sectional view along the BB direction.

[0026] Figure 10 This is a bottom view of the EEG recording box of this utility model in the locked state.

[0027] Figure 11 yes Figure 10 A cross-sectional view along the CC direction.

[0028] Figure 12 yes Figure 10 A cross-sectional view along the DD direction.

[0029] Figure 13 This is a framework diagram of the dynamic electroencephalogram system of this utility model.

[0030] In the picture: 1. Protective board; 2. Buttons; 3. Top cover; 31. Opening; 32. Button slot; 33. Top cover retaining plate; 34. Third side buckle; 35. Top cover pin buckle; 36. First side buckle; 37. Top cover connector; 4. Circuit board; 41. Display screen; 5. Slider; 51. Operating boss; 52. Clip; 6. Battery compartment cover; 61. Operating hole; 62. Plunger locking part; 621. First groove; 622. Second groove; 63. First cover buckle; 7. First side panel; 8. Side panel protective sleeve; 9. Bottom cover; 91. Cover plate locking hook; 911. Locking groove; 92. Second side buckle; 93. Bottom cover pin buckle; 94. Fourth side buckle; 95. Bottom cover connector; 96. Battery compartment; 97. Second cover plate buckle; 98. Bottom cover buckle; 99. Sliding space; 10. Pin plate; 11. Data Acquisition Interface; 12. Communication interface; 13. Second side panel. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] See Figure 1This embodiment provides an EEG recording box, which is a rectangular box. Specifically, the box contains a battery compartment 96, a circuit board 4, and a display screen 41 on the circuit board 4; the front of the box has a top cover 3; the back of the box has a bottom cover 9 and a battery compartment cover 6; the first side of the box has a pin plate 10 connected to the circuit board 4 for connecting several single-channel electrodes to collect EEG signals; the second side of the box has a collection interface 11 connected to the circuit board 4 for connecting an EEG cap to collect EEG signals; the third side of the box has a communication interface 12 electrically connected to the circuit board 4 for transmitting EEG signals; and the fourth side of the box has a locking member to lock the battery compartment cover 6.

[0033] It should be noted that, for reference Figure 1 In this embodiment, the top cover 3 is the front, the bottom cover 9 is the back, and the first, second, third, and fourth sides are the top, right, left, and bottom, respectively.

[0034] Optional, see the back structure of top cover 3. Figure 2 The top cover 3 has an opening 31 to expose the display screen 41 on the circuit board 4. Near the opening 31 is a button slot 32. A button 2, made of silicone or similar material, is inserted into the button slot 32 from the front of the top cover 3. Simultaneously, the power button and event button (or other function buttons) on the circuit board 4 protrude and are embedded in the button slot 32, allowing the button 2 to contact the power button and event button to perform its function. In this embodiment, the upper side of the top cover 3 has a top cover pin clip 35 that protrudes perpendicularly to the surface of the top cover 3 and into the box. The lower side of the top cover 3 has a top cover plate 33 that protrudes perpendicularly to the surface of the top cover 3 and into the box. The right side of the top cover 3 has a first-side clip 36 that protrudes perpendicularly to the surface of the top cover 3 and into the box. The left side of the top cover 3 has a third-side clip 34 that protrudes perpendicularly to the surface of the top cover 3 and into the box. The four corners of the inner side of the top cover 3 each have a top cover connector 37 (usually a screw post) that protrudes perpendicularly to the surface of the top cover 3 and into the box.

[0035] Optional, see Figure 1 A protective plate 1 is provided on the front of the top cover 3 and is connected to the top cover 3 by screws or the like. The protective plate 1 is provided with a transparent plate to expose the interface content of the display screen 41. The protective plate 1 is used to cover and protect the display screen 41 and the buttons 2.

[0036] Optional, see the front structure of the bottom cover 9. Figure 3The bottom cover 9 has a bottom cover pin buckle 93 on its upper side, which is perpendicular to the surface of the bottom cover 9 and protrudes into the box body. The bottom cover 9 has a bottom cover buckle 98 on its lower side, which is perpendicular to the surface of the bottom cover 9 and protrudes into the box body. The bottom cover 9 has a second side buckle 92 on its right side, which is perpendicular to the surface of the bottom cover 9 and protrudes into the box body. The bottom cover 9 has a fourth side buckle 94 on its left side, which is perpendicular to the surface of the bottom cover 9 and protrudes into the box body. The four corners of the inner side of the bottom cover 9 each have a bottom cover connector 95 (usually a screw post) that is perpendicular to the surface of the bottom cover 9 and protrudes into the box body. A portion of the bottom cover 9 is recessed into the box body to form a battery compartment 96, located between the battery compartment cover 6 and the bottom cover 9. The battery compartment 96 can hold at least four batteries. Furthermore, several second cover buckles 97 are located near the battery compartment 96. Each second cover buckle 97 has a through hole at the upper edge of the battery compartment 96 and extends to the front of the bottom cover 9 as a fastening groove.

[0037] Optional, see Figure 1 , Figure 6 The lower part of the battery compartment cover 6 is provided with an operation hole 61; the battery compartment cover 6 is provided with a plunger snap-fit ​​part 62, and the lower part of the plunger snap-fit ​​part 62 is provided with a first groove 621 and a second groove 622 for snapping the spring plunger top ball; the upper side of the battery compartment cover 6 is provided with a protruding first cover plate buckle 63, which is snapped into the fastening groove of the second cover plate buckle 97 from bottom to top.

[0038] Optional, see Figures 1-3Both the top cover 3 and the bottom cover 9 protrude into the box from their periphery and are recessed inside, forming a space in the middle to accommodate the circuit board 4 after they are connected. Specifically, the top cover pin clip 35 and the bottom cover pin clip 93 are respectively connected to the snap positions on the front and rear sides of the pin plate 10, so that the pin plate 10 becomes the first side of the box, used to connect several single-channel electrodes to collect EEG signals. The first side clip 36 and the second side clip 92 are respectively connected to the snap positions on the front and rear sides of the first side plate 7, so that the first side plate 7 becomes the second side of the box. The acquisition interface 11 on the circuit board 4 protrudes from the first side plate 7 and is used to connect the EEG cap to collect EEG signals. The third side clip 34 and the fourth side clip 94 are used to fix the second side plate 13, so that the second side plate 13 becomes the third side of the box. The communication interface 12 on the circuit board 4 protrudes from the second side plate 13 and is used to transmit EEG signals. The top cover latch 33 and the bottom cover latch 98 are fastened together, and the top cover connector 37 and the bottom cover connector 95 are fixedly connected by screws, etc., so that the top cover 3 and the bottom cover 9 are fixed. The lower part of the battery compartment cover 6 is bent forward to form the fourth side of the bottom of the box. The first cover latch 63 is engaged with the second cover latch 97 so that the battery compartment cover 6 is connected to the bottom cover 9 and covers the battery compartment 96, completing the assembly of the entire box. In this embodiment, the acquisition interface 11 and the communication interface 12 are arranged opposite to each other on the right and left sides of the box, and the pin plate 10 and the locking member are arranged opposite to each other on the upper and lower sides of the box. In other embodiments, the positions of each component on the circuit board 4 and the box, as well as the positions of each connector on each side of the cover, can also be changed.

[0039] Optionally, a protective sleeve 8 is fitted over the outside of the first side plate 7 to protect the acquisition interface 11.

[0040] Optional, see the back of bottom cover 9 (rear view). Figure 4 The bottom of the back of the bottom cover 9 is recessed upward to form a sliding space 99 for accommodating the locking element; the sliding space 99 is located below the battery compartment 96 and between the battery compartment cover 6 and the bottom cover 9. A plurality of cover plate locking hooks 91 are provided in the sliding space 99, and the cover plate locking hooks 91 are set downward from the upper surface of the sliding space 99 and bent to form a locking groove 911 facing the horizontal direction.

[0041] As an alternative implementation of the locking mechanism.

[0042] Optional, see Figures 4-6 The locking mechanism includes: a slider 5 suitable for horizontal sliding within the sliding space 99, several locking pieces 52, cover plate locking hooks 91 corresponding to each locking piece 52, a spring plunger, and a plunger engaging portion 62 (including a second groove 622 on the left and a first groove 621 on the right). Preferably, in this embodiment, two locking pieces 52 and two corresponding cover plate locking hooks 91 are provided, but multiple pieces can also be provided as needed.

[0043] Optional, see Figure 5 , Figure 6 The bottom of the slider 5 has an operating boss 51 protruding from the operating hole 61, through which the slider 5 slides. Two locking pieces 52 are fixedly installed on the left and right sides of the slider 5, respectively, and are cylindrical for easy locking. The radial direction of the locking pieces 52 is in the sliding direction, and the axial direction is perpendicular to the bottom cover 9 and the battery compartment cover 6. A plunger hole is opened on the upper side of the slider 5 to accommodate a spring plunger.

[0044] Optional, see Figures 7-9 This represents the unlocked state of the battery compartment cover 6 and the bottom cover 9 in this embodiment. Specifically, the operating boss 51 is moved to the left side of the operating hole 61, causing the slider 5 to slide horizontally to the left within the sliding space 99 until the locking pieces 52 disengage from the cover locking hook 91 (leave the locking groove 911) and are within the sliding space 99. At the same time, the top ball of the spring plunger is located within the second groove 622, thus unlocking the battery compartment cover 6 and the bottom cover 9.

[0045] Optional, see Figures 10-12 This represents the locked state of the battery compartment cover 6 and the bottom cover 9 in this embodiment. Specifically, the operating boss 51 is moved to the right side of the operating hole 61, causing the slider 5 to slide horizontally to the right within the sliding space 99 until the locking piece 52 abuts against the cover locking hook 91 (engulfed in the locking groove 911). At the same time, the top ball of the spring plunger is located in the first groove 621, locking the battery compartment cover 6 and the bottom cover 9. Optionally, the locking direction and position of the locking member can be adjusted, provided that the locking piece 52 can abut against and disengage from the locking groove 911 when the slider 5 is slidable, and the sliding direction of the slider 5 is perpendicular to the installation direction of the first cover buckle 63 (that is, ensuring horizontal and vertical limiting).

[0046] In some embodiments, a dynamic electroencephalogram (EEG) system is provided, see Figure 13 The dynamic EEG system includes: an EEG recording box; several single-channel electrodes connected to a pin plate 10 to transmit EEG signals; an EEG cap connected to a data acquisition interface 11 to transmit EEG signals, for example, the data acquisition interface 11 uses a DB25 interface; an event button electrically connected to a communication interface 12, used to mark event nodes when a clinical event occurs; and a host computer electrically connected to the communication interface 12 via cable, used to analyze EEG data, for example, the communication interface 12 uses a Remo interface, which can receive power supply, event marking signals, and data transmission with the host computer.

[0047] Optionally, the circuit board 4 includes: a signal receiving circuit electrically connected to the electrode pin board 10 and the acquisition interface 11 to receive EEG signals, and electrically connected to the communication interface 12 to receive event nodes; a signal processing circuit connected to the signal receiving circuit for amplifying, filtering, and analog-to-digital converting the received EEG signals to obtain EEG data; a memory card connected to the signal processing circuit for storing EEG data; and a data transmission circuit connected to the memory card for transmitting EEG data to the host computer via the communication interface 12.

[0048] In summary, the EEG recording box of this utility model, by setting up a battery compartment, circuit board, and display screen inside the box, with the display screen exposed on the front of the box, and a bottom cover and a battery compartment cover plate for covering the battery compartment on the back of the box, and by utilizing the four sides of the box to respectively set up a pin plate for connecting a large number of electrodes, a data acquisition interface for connecting an EEG cap, a communication interface for transmitting EEG signals, and a locking device for locking and unlocking the battery compartment cover, makes full use of the interfaces for data acquisition, power supply, display, and communication functions on each side of the cuboid box, effectively meeting the requirements of small size and lightweight EEG recording equipment, and realizing a dynamic EEG system suitable for long-term clinical EEG monitoring.

[0049] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0050] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0052] Based on the above-described preferred embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. That is, the technical scope of this utility model is not limited to the contents of the specification.

Claims

1. An electroencephalogram (EEG) recording device, characterized in that, include: A box shaped like a cuboid; The box body is equipped with a battery compartment (96), a circuit board (4) and a display screen (41) located on the circuit board (4). The front of the box body is provided with an opening (31) for exposing the display screen (41). The back of the box is provided with a battery compartment cover (6) for covering the battery compartment (96). The first side of the box is provided with a pin plate (10) connected to the circuit board (4) for connecting several single-channel electrodes to collect EEG signals; The second side of the box is provided with a data acquisition interface (11) connected to the circuit board (4) for connecting the EEG cap to acquire EEG signals; The third side of the box is provided with a communication interface (12) that is electrically connected to the circuit board (4) for transmitting brain signals; The fourth side of the box is provided with a locking element to lock the battery compartment cover (6).

2. The EEG recording box as described in claim 1, characterized in that, The acquisition interface (11) is set opposite to the communication interface (12).

3. The EEG recording box as described in claim 1, characterized in that, The back of the box is also provided with a bottom cover (9), and a partial recess of the bottom cover (9) forms the battery compartment (96) so that the battery compartment (96) is located between the battery compartment cover plate (6) and the bottom cover (9).

4. The EEG recording box as described in claim 3, characterized in that, The bottom cover (9) is also provided with a sliding space (99) between the battery compartment cover plate (6) and the bottom cover (9) to accommodate the locking member; The locking element includes: A slider suitable for horizontal sliding (5); Several clips (52) are disposed on the slider (5); A cover plate locking hook (91) is provided on the bottom cover (9) and corresponds one-to-one with the locking piece (52); wherein The horizontal sliding slider (5) abuts against the cover lock hook (91) to lock the battery compartment cover (6) and the bottom cover (9); the reverse sliding slider (5) disengages from the cover lock hook (91) to unlock the battery compartment cover (6) and the bottom cover (9).

5. The EEG recording box as described in claim 4, characterized in that, The cover plate locking hook (91) is set downward and bent to form a locking groove (911) facing the horizontal direction. When the battery compartment cover (6) and the bottom cover (9) are locked, the locking piece (52) engages in the locking groove (911); When the battery compartment cover (6) and the bottom cover (9) are unlocked, the locking piece (52) leaves the locking groove (911) and is in the sliding space (99).

6. The EEG recording box as described in claim 4, characterized in that, The locking component also includes: A spring plunger is located on the slider (5); The plunger locking part (62) is located on the battery compartment cover (6); The first groove (621) and the second groove (622) are located sequentially on the plunger engaging part (62); wherein When the battery compartment cover (6) is locked to the bottom cover (9), the top ball of the spring plunger is located in the first groove (621); When the battery compartment cover (6) and the bottom cover (9) are unlocked, the top ball of the spring plunger is located in the second groove (622).

7. The EEG recording box as described in claim 4, characterized in that, The battery compartment cover (6) is provided with an operation hole (61); The slider (5) is provided with an operating boss (51) with a protruding operating hole (61) so as to slide the slider (5) through the operating boss (51).

8. The EEG recording box as described in claim 1, characterized in that, The front of the box is also provided with a button (2), which is connected to the circuit board (4).

9. A dynamic electroencephalogram (EEG) system, characterized in that, include: The EEG recording box as described in any one of claims 1-8; Several single-channel electrodes are connected to the pin plate (10) to transmit electroencephalogram (EEG) signals; An EEG cap is connected to the acquisition interface (11) to transmit EEG signals; The event button is electrically connected to the communication interface (12) and is used to mark event nodes; The host computer is electrically connected to the communication interface (12) and is used to analyze EEG data.

10. The dynamic EEG system as described in claim 9, characterized in that, The circuit board (4) includes: The signal receiving circuit is electrically connected to the electrode pin plate (10) and the acquisition interface (11) to receive EEG signals, and electrically connected to the communication interface (12) to receive event nodes; A signal processing circuit, connected to the signal receiving circuit, is used to amplify, filter, and perform analog-to-digital conversion on the received EEG signals to obtain EEG data. A memory card is connected to the signal processing circuit and is used to store EEG data; a data transmission circuit is connected to the memory card and transmits EEG data to the host computer through the communication interface (12).

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