Time-frequency analysis of subject 156's responses during self-vocalization and playback.

<p>(A) MRI surface rendering of the left cerebral hemisphere showing the locations of all recording contacts and major sulci. In this figure, filled black circles denote contacts where significant <i>decreases</i> (p<.01, 0–500 msec post-stimulus) in high gamma band (HGB, 70–150 Hz) power occurred during self-vocalization (SV) compared to playback (PB). Red circles indicate contacts where significant <i>increases</i> in high gamma band power were observed during SV compared to PB. (B) Broad-band time-frequency analysis (2–250 Hz) of evoked responses recorded during SV. Individual panels display the power responses for each frequency band at each recording site (−.25 sec to 1 sec post-voice onset). The largest responses are seen to occur between 70–150 Hz. Thick gray lines represent the major sulci as labeled in A. (C) Time-frequency analysis of evoked responses recorded during the PB condition (LF-lateral fissure, STS-superior temporal sulcus, ITS-inferior temporal sulcus, TTS- transverse temporal sulcus).