System and method for detecting color perception based on electroencephalogram evoked potential
A technology of perception ability and evoked potential, applied in sensors, diagnostic recording/measurement, medical science, etc., can solve the problems of false reporting of test results, unquantifiable, inconvenient use, etc., to achieve objective detection, short detection time, and better results accurate effect
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[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 only used to illustrate the present invention, but not to limit the scope of the present invention.
[0043] SSVEP principle such as figure 1 As shown, under the evoked constant frequency visual stimulation, periodic EEG signals will be generated on the cerebral cortex, and the frequency may include the half frequency, octave and fundamental frequency components of the stimulation frequency. The spectral components are dominated by the fundamental frequency, and the responses are mainly distributed in the visual cortex of the occipital area.
[0044] when figure 1 The stimuli in exist at two frequencies f 1 and f 2 When , in addition to the fundamental frequency and multiplier frequency, there is also a new component composed of two frequencies in the response components|n 1 ...
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