Patent ID: 11868530
Assignee: nan
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 1:
2. The accurate control method of visual stimuli for a brain-computer interface according to claim 1, wherein the generator is implemented as follows:
at run time, the generator is a separate process; the generator has an interactive interface, by which the experimenter is allowed to describe showing patterns of the accurate visual stimuli of a brain-computer interface; the showing patterns include a background image, the location and shape of a stimuli area, and flicker patterns of stimuli; the flicker patterns include random sequence patterns and sine wave patterns; regarding the random sequence patterns, 0 represents “dark”, 1 represents “bright”, and a random sequence consisting of 0 and 1 is used to control the stimuli area to be bright or dark on each frame; regarding the sine wave patterns, a designated sine function is used to determine the brightness of the stimuli area on each frame; in the random sequence patterns, the experimenter needs to specify the random sequence, and in the sine wave patterns, the experimenter needs to specify an amplitude, a frequency and a phase of the sine function; and an algorithm implemented in the generator automatically generates the image sequence according to the refresh rate of the display after the parameters are input by the experimenter.