Device, method and system for positioning cerebral-cortex functional area

A technology of cerebral cortex and functional areas, applied in the field of neurosurgery, can solve problems such as short experiment time, small amount of calculation, and complex algorithms, and achieve the effects of overcoming the lag of response signals, improving accuracy, and realizing synchronization

Active Publication Date: 2016-06-15
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] For this reason, the first technical problem to be solved by the present invention is that the signal synchronization method in the prior art cannot achieve real synchronization, and there are synchronization errors, which affect the accuracy of subsequent processing, thereby proposing a method that can well realize signal synchronization. Cerebral cortex functional area positioning device

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  • Device, method and system for positioning cerebral-cortex functional area
  • Device, method and system for positioning cerebral-cortex functional area
  • Device, method and system for positioning cerebral-cortex functional area

Examples

Experimental program
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Example Embodiment

[0075] Example 1:

[0076] This embodiment provides a device for positioning functional areas of the cerebral cortex, such as image 3 As shown, it includes a prompt screen 1, an intracranial electrode 2, an EEG amplifier 3, a computer 4, and an EMG electrode 5. among them,

[0077] There is one EMG electrode 5, which is set on the subject's wrist to obtain the EMG signal of the finger, palm, wrist and other parts, so as to obtain the starting time of the body movement.

[0078] In other alternative embodiments, multiple EMG electrodes can also be provided, which are respectively placed on multiple exercise positions of the subject to collect EMG signals at the set positions, such as steps, legs, and faces.

[0079] There are one or more intracranial electrodes, which are respectively set at different positions under the cerebral cortex of the subject, and collect the intracranial EEG signals of the cerebral cortex at the set position for subsequent determination of whether the posit...

Example Embodiment

[0084] Example 2:

[0085] In this embodiment, a method for locating functional regions of the cerebral cortex is provided, which can be used in the computer in Embodiment 1, and is implemented by operating instructions with the following functions. Including the following steps, flow chart such as Figure 4 As shown,:

[0086] S1. First, obtain the original intracranial EEG signal and the original EMG signal of the movement part respectively, which can be obtained by the EEG amplifier 3 in Embodiment 1 here. Using the device in Example 1, the original EMG signal can be obtained by the EMG electrode 5 set at the moving part, and the original intracranial EEG signal can be obtained by the intracranial electrode 2, and then the EEG signal and the EEG signal can be obtained through the EEG amplifier 3. The EMG signal is sent to the computer together.

[0087] S2. Then, the above-mentioned original intracranial EEG signals and original EMG signals are processed separately.

[0088] S2-...

Example Embodiment

[0123] Example 3:

[0124] This embodiment also provides a cerebral cortex functional area positioning system, which is used in the computer in Embodiment 1, and includes:

[0125] Signal acquisition unit: acquire the original intracranial EEG signal and the original EMG signal of the movement part respectively;

[0126] Starting time acquiring unit: acquiring the starting time of the body action according to the original EMG signal;

[0127] Independent variable matrix acquisition unit: Obtain the independent variable matrix of the EMG signal after the start time;

[0128] Intracranial EEG signal acquisition unit: intercept the intracranial EEG signal of the corresponding time period according to the start time of the body movement;

[0129] Response variable matrix obtaining unit: obtaining a response variable matrix according to the intracranial EEG signal;

[0130] Correlation calculation unit: calculate the correlation between the independent variable matrix and the response variab...

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Abstract

The invention provides a device for positioning a cerebral-cortex functional area. The device comprises a reminding screen and an intracranial electrode, and further comprises one or more electromyographic electrodes arranged at movement parts of a subject, electromyographic signals are collected and used for allowing moments of action performing of the subject and staring moments of intracranial brain-electrical signal observing of the subject to be synchronous. The invention further provides a method for positioning the cerebral-cortex functional area. The method includes the steps that starting moments of human-body actions are obtained according to original electromyographic signals, then intracranial brain-electrical signals in the corresponding time periods are obtained, and synchronization of the intracranial brain-electrical signals and human-body signals is achieved; then response variable matrixes are generated according to the intracranial brain-electrical signals, independent variable matrixes are generated according to the human-body signals, and the cerebral-cortex area corresponding to the human-body actions is determined by calculating the correlation between the independent variable matrixes and the response variable matrixes. By means of the technical scheme, synchronization between the human-body actions and the intracranial brain-electrical signals can be well achieved, and the accuracy of follow-up processing can be improved.

Description

technical field [0001] The present invention relates to the field of neurosurgery. Specifically, it is a device, method and system for locating functional areas of the cerebral cortex. Background technique [0002] Clinically, before neurosurgery, in order to ensure the effect of surgery, a full and rigorous preoperative evaluation is required. Previous studies have shown that different areas of the cerebral cortex correspond to different functions of the human body, such as motor areas, language areas, visual areas, and so on. In neurosurgery, on the one hand, it is necessary to remove the lesion areas on the cerebral cortex that cause neurological diseases, and on the other hand, these normal functional areas of the patient should be preserved as much as possible to minimize the loss of the patient's normal human body functions. To achieve this goal, it is necessary to accurately locate the main functional areas of the cerebral cortex during preoperative assessment, so a...

Claims

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Application Information

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IPC IPC(8): A61B90/10A61B5/0476A61B5/0488
CPCA61B5/369A61B5/389
Inventor 洪波钱天翼何永振
Owner TSINGHUA UNIV
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