Figure 4. .

Field potentials from STS and Sylvian fissure (insular cortex) from three experiments. (A) Two partial coronal slices of a structural MRI scan display electrode contacts in the STS (top image) and Sylvian fissure (SF; insular cortex; bottom image). (B) The dynamic facial motion study elicits strong responses to mouth opening movements at ∼400 msec post-motion onset and negligible responses to gaze aversions. (C) Isolated static face parts (eyes and mouth) and full faces elicit very long latency responses, particularly in STS Contact 6. (D) Visual stimuli in general (faces, flowers, scrambled faces, or words) do not appear to induce prominent responses at these sites. Talairach coordinates (x, y, z) for the electrode contacts were: STS 4–12, −41, −6; STS 5–8,−49, −7; STS 6–8, −55, −7; SF 3–15, −46, +12; SF 4–15, −53, +13; SF 5–15, −60, +14. Data from Puce and Allison (1999).