Experimental paradigm for text sequence stimulation. (IMAGE)
Caption
(A) Schematic of a single-trial stimulus process in the frequency-sweep experiment and the comparison experiment. (B) Comparison of luminance changes between text sequence stimulation and brightness-modulated steady-state visual evoked potential (SSVEP) under 6 Hz. (C) Interface of the 40-target brain–computer interface speller. (D) Frequency and phase information for each target in the 40-target brain–computer interface using joint frequency-phase modulation (JFPM) encoding method.
Credit
Xiaorong Gao, School of Biomedical Engineering, Tsinghua University.
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