Figure 1

Functional heterogeneity of the TP. (A), (B): static frames of the video showing the two actors; (C): known properties of TP responses: brief phasic responses (wavelet power in gamma band, the mean across trials is z-scored using the spontaneous activity prior to static onset) in (top panels) gender task are similar for short (yellow) and long (brown) stimuli, which are absent in the (bottom panels) action task. We show time courses of power from static onset for example leads (inset) in T and VL for two patients (P1 and P3). Shaded bands represent standard deviation across twenty bootstraps. (D): Lateral and ventral views of the unfolded right hemisphere indicating the four parts of TP: dorsal (Ds, red), ventrolateral (VL, green), medial (Md, purple) and tip (T, blue): border between ventrolateral and dorsal or medial in the depth of the STS and OTS respectively; border between ventrolateral and tip at the end of the OTS and STS; the areas that provide the strongest input to TP for the task are labeled in red, these are LG1 (red ellipse), FFA (yellow ellipse), OFC and rIFG. (E): proportion of responsive leads in the four subregions: mean: horizontal line, median open circle, dots individual patients; (F), (G): Reaction time (RT) as a function of latency (‘lat’) of leads in VL (F, 8 patients) and Tip (G, 12 patients); Linear fit: RT: 3.6 lat + 161 ms (F) and RT = 3lat + 263 ms (G) but correlation significant in F (r = 0.80, p < 0.02) and not in G (r = 0.51, p > 0.05). STS superior temporal sulcus, ITS inferior temporal sulcus, OTS occipito-temporal sulcus, Coll S collateral sulcus, IPS intraparietal sulcus, Cen S central sulcus, IFS inferior frontal sulcus, FG fusiform gyrus, LG lingual gyrus, IFG inferior frontal gyrus, OFC orbitofrontal cortex, rIFG rostral inferior frontal gyrus.