Figure 4.

Spline-Laplacian-transformed ERBP results for vocalization with feedback via (A) microphone and (B) Aux In port, (C) without feedback, and (D) playback [no vocalization] experimental conditions. Largest-amplitude responses clustered in sites C, D, and E on the posterior STG for all four conditions. Site B also showed responses more anteriorly on STG. Dashed black lines denote voice onset. Gray lines denote major sulci (see also Fig. 2A). Asterisks indicate channels with persistent CI artifact in the two conditions where the CI’s Aux In port was used to present auditory stimuli (B, D). Spline-Laplacian was not effective in removing this artifact.