System and method for cursor control based on brain-computer interface

A cursor control and brain-computer interface technology, applied in the field of brain science applications, achieves the effects of a large number of applicable people, high accuracy, and a wide range of applications

Active Publication Date: 2013-06-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ERD\ERS potentials have higher requirements on people, and users need ...

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  • System and method for cursor control based on brain-computer interface
  • System and method for cursor control based on brain-computer interface
  • System and method for cursor control based on brain-computer interface

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Embodiment 1

[0025] In the first embodiment of the present invention, a cursor control system based on a brain-computer interface is proposed, referring to figure 1 , the system includes a visually evoked stimulation module, an EEG collector and a processor. Wherein, the processor includes a signal processing module and a cursor control module. Wherein, the visually evoked stimulation module includes two stimulation modes of P300 evoked potential visual stimulation and SSVEP evoked potential visual stimulation, which are provided to users in the form of interface display.

[0026] Among them, the P300-evoked potential visual stimulus and the SSVEP-evoked potential visual stimulus both contained several target stimuli. Among them, according to the existing P300 evoked potential technology, the P300 evoked potential visual stimulus was designed according to the Oddball paradigm, including eight flashing blocks A, B, C, D, E, F, G, and H. According to the existing SSVEP evoked potential tec...

Embodiment 2

[0035] In the second embodiment of the present invention, a cursor control method based on a brain-computer interface is proposed, referring to figure 1 and Figure 8 , the method includes: step 1, providing the P300 evoked potential visual stimulus and the SSVEP evoked potential visual stimulus to the user in an interface display mode; step 2, collecting the EEG signal in real time and performing amplification and analog-to-digital conversion; step 3, the processor Receiving and processing the EEG signals to determine the user's control intention; step 4, controlling the cursor to move in a corresponding direction according to the control intention. Wherein, the distance of each movement in any direction is 50 pixels.

[0036] Wherein, step 3 includes: step 31, judge whether there is SSVEP evoked potential on a section of EEG signal collected in real time; The signal is reprocessed to determine whether the user has selected the P300 stimulus at the top of the screen or the ...

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Abstract

The application provides a system and a method of cursor control based on a brain-computer interface. The system comprises a visual evoked simulation module, an electroencephalogram acquisition instrument and a processor, wherein the visual evoked simulation module is used for providing P300 evoked potential stimulation and SSVEP (Steady State Visual Evoked Potential) stimulation for a user in an interface display manner; the electroencephalogram acquisition instrument is used for acquiring the electroencephalogram signal of the user in real time and carrying out amplification and analog-to-digital conversion, and carrying out signal transmission through data wires and the processor; and the processor is used for receiving and processing the electroencephalogram signal, and judging the control purpose of the user and controlling cursor movement.

Description

technical field [0001] The present invention relates to brain science application technology, and more specifically, to a cursor control system and method based on a brain-computer interface. Background technique [0002] Brain-Computer Interface (Brain-Computer Interface) is a communication and control system that realizes information exchange between humans and the outside world based on EEG signals. It is a direct communication and control channel established between the human brain and computers or other electronic devices. Brain-computer interface technology can convert electrophysiological activities or nervous system activities of organic organs into signals that can be recognized by mechanical devices, directly convert brain information into corresponding control commands, and establish a network between the human brain and computers or other external devices. a direct channel of information exchange. [0003] P300 evoked potential is a kind of ERP (Event-Related Po...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 毕路拯介科范新安李云
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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