Fig. 3.

(A) The TRF for the unisensory response to the speech envelope shows distinct peaks at positive lags. (B) The GFP associated to the multisensory gain of the envelope-TRFs for the audiotactile stimulation, the envelope-MGF, exhibits a single peak at a delay of 114 ms, plus the delay of the tactile signal. The dashed red line indicates the 99% amplitude range of null models. (C) After normalization through computing z-scores, the amplitude of the peak of the envelope-MGF depends sinusoidally on the delay of the audiotactile stimulation (red line). (D) After normalization through computing z-scores, the multisensory gain in EEG reconstruction depends sinusoidally on the delay of the audiotactile stimulation (red line). A.u., arbitrary units.