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Brain-computer interface system and method based on steady state visual evoked in intelligent space

A technology of intelligent space and visual stimulation, applied in computer parts, mechanical mode conversion, input/output process of data processing, etc., can solve problems such as restricting the subject's range of activities, and achieve the goal of strengthening active movement awareness and improving intelligence. The effect of leveling, removing the constraints of position and orientation

Active Publication Date: 2016-05-04
XI AN JIAOTONG UNIV
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Problems solved by technology

Therefore, the subject will be limited by the position and dimension of the visual stimulator, and cannot be visually evoked at any position in the home environment or from any direction, which greatly limits the range of activities of the subject
In addition, steady-state visual evoking is limited by the refresh rate of visual stimulators, and the refresh rate of traditional screens is around 60Hz

Method used

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  • Brain-computer interface system and method based on steady state visual evoked in intelligent space
  • Brain-computer interface system and method based on steady state visual evoked in intelligent space

Examples

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Embodiment

[0052] Take the subject who wants to go to the study as an example. In the smart space, the subject watches the Newton ring stimulus instruction on the LED visual stimulation display representing the order to reach the study. After collection and processing, it is input into the control host, and the control host recognizes the subject's movement intention through the EEG signal, and then the camera obtains the subject's position information and surrounding environment information, and the control host can analyze the EEG signal and position environment information. Carry out calculation processing to provide subjects with navigation functions including estimated exercise time and planned exercise path, that is, to estimate the exercise time based on the distance between the subject’s starting position and the scheduled exercise position and the subject’s subjective movement speed, according to the subject’s The position information of the test subject and the surrounding envir...

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Abstract

The invention discloses a brain-computer interface system and method based on steady state visual evoked in an intelligent space. A visual evoked potential generated by a testee by watching an LED visual stimulus display is collected and processed by EEG and is input to a control host, a camera obtains the position information and the surrounding environmental information of the testee in the intelligent space, the control host calculates an electroencephalogram signal, the position information and the surrounding environmental information to provide a navigation function comprising motion time pre-estimation and motion path planning for the testee, and the control host generates a control command to control a lower extremity exoskeleton to help the testee to move to a preset target. The brain-computer interface system and method disclosed by the invention can be used for eliminating the limitation of the visual stimulator to the position and the direction of the testee, reinforcing the active motion consciousness of the testee and improving the intelligent living level of the testee.

Description

【Technical field】 [0001] The invention relates to the fields of rehabilitation medicine and information interdisciplinary technology and brain-computer interface technology, in particular to a brain-computer interface system and method based on steady-state visual induction in an intelligent space. 【Background technique】 [0002] The brain-computer interface is a direct communication and control channel established between the human brain and computers or other electronic devices. Through this channel, the subjects can directly express ideas or manipulate devices through the brain without the need for language or Actions, which can effectively enhance the ability of the subjects to communicate with the outside world or control the external environment. [0003] Steady-state visual evoked potential refers to the specific electrical activity generated by the nervous system receiving visual stimulation with a frequency higher than 6Hz, and the recorded EEG signal will contain t...

Claims

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Application Information

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IPC IPC(8): G06F3/01
CPCG06F3/013G06F3/015G06F2203/012
Inventor 张进华洪军王润泽王保增张程邱志惠
Owner XI AN JIAOTONG UNIV
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