Visual acuity automatically recognized unattended event related potential brain-computer interface method

An event-related potential, automatic recognition technology, applied in the field of human-computer interaction, can solve the problem of lack of visual target stimulus sequence vision non-attention processing vision BCI and other problems, achieve huge social and economic benefits, wide application prospects, and reduce the difficulty of interaction. Effect

Inactive Publication Date: 2017-03-08
苏州神经元电子科技有限公司
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Problems solved by technology

[0004] In terms of visual BCI, the Chinese patent "Steady-state visually induced brain-computer interface method based on two-frequency stimulation of the left and right visual field" (application number 200910076209.5) adopts the target presentation method of dual-frequency stimulation of the left and right visual field, and the number of stimulation targets that can be achieved is very large. Great improvement, but currently all the EEG signals extracted by visual BC

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  • Visual acuity automatically recognized unattended event related potential brain-computer interface method
  • Visual acuity automatically recognized unattended event related potential brain-computer interface method
  • Visual acuity automatically recognized unattended event related potential brain-computer interface method

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] The non-attention event-related potential brain-computer interface method of automatic recognition of visual acuity of the present invention comprises the following steps:

[0044] (1) Make the eye chart optotype stimulus picture, and store it in the event-related potential processing device;

[0045] (2) The processing device is connected with the amplifier for detecting EEG signals and the multi-lead electrode cap;

[0046] (3) set the visual stimulation parameters of the visual mark stimulation picture to the user in the processing device;

[0047] (4) applying auditory stimulation to the user while the user is performing visual stimulation;

[0048] (5) collect...

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Abstract

The invention relates to a visual acuity automatically recognized unattended event related potential brain-computer interface method. The method comprises the following steps: manufacturing a vision-sighting target stimulus picture and storing the picture in an event related potential processing device; connecting the processing device with a multi-lead electrode cap for detecting an electroencephalogram signal; setting a visual stimulus parameter of the sighting target stimulus picture in the processing device to a user; exerting auditory stimulus on the user while performing vision stimulus on the user; acquiring an original electroencephalogram signal of the vision unattended event related potential of the user in the above mentioned process by use of the multi-lead electrode cap; processing and analyzing the original electroencephalogram signal by use of the processing device to obtain an event related oscillogram educed by different visual acuity sighting target stimulus users; establishing the relevance of the electroencephalogram and the visual acuity according to the oscillogram, and then establishing a visual acuity automatically recognized brain-computer interface. The invention provides a new method for the brain-computer interface for vision information processing and the automatic detection of the visual acuity, and the defect that the subjective coordination of the user is required is overcome.

Description

technical field [0001] The invention relates to the technical field of human-computer interaction, in particular to a non-attentional event-related potential brain-computer interface method for automatic recognition of visual acuity. Background technique [0002] The brain-computer interface (brain computer interface, BCI) system is a communication system that does not require the participation of peripheral nerves and muscles. It aims to establish a channel for direct communication between the human brain and the outside world. The recognized brain instructions or information are transmitted to the controlled external device, and finally the brain directly controls the external device. [0003] Vision has physiological and psychological attributes, and the results reflected by the visual inspection are comprehensive judgments made by the advanced visual center (brain) after complex processing and analysis of the visual stimulus. electric signal. EEG signals are usually ob...

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Application Information

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IPC IPC(8): G06F3/01
CPCG06F3/015
Inventor 陶陆阳陈溪萍
Owner 苏州神经元电子科技有限公司
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