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. 2016 May 24;10:229. doi: 10.3389/fnins.2016.00229

Figure 4.

Figure 4

(A) The frequency spectrum of the stimulus sound envelope. (B) The rhythmic pattern, which consisted of 333 ms long tones and rests. Each tone consisted of 990 Hz pure tones with 10 ms rise and fall times. (C) Average SS-EPs with noise subtracted amplitudes averaged across all channels. Peaks can be visualized at the quadruple meter frequency (0.75 Hz) and beat frequency (3 Hz). (D) Average topographical map of the SS-EPs elicited at the quadruple meter frequency (0.75 Hz) and beat frequency (3 Hz), averaged across all participants.