Figure 3.

Modulations of evoked transient and sustained responses on the 3D rendering of individual temporal cortices. After the onset of part 2 (0 ms), three main transient waves were found more prominent in the 1-stream condition, on several contacts of the four patients kept for this analysis. A first one was modulated between 60 and 80 ms (orange), a second one between 80 and 160 ms (yellow) and a third one between 120 and 200 ms (green). These effects were mainly located on the lateral STG and their time-courses are depicted. In patient #4, effects on the sustained response were found between 200 and 700 ms: mean amplitude was greater in the 2-stream condition (red circles). Yellow-green hatchings correspond to electrode contacts where both second and third effects are present. These evoked responses are baseline corrected with respect to the (−100, 0 ms) period preceding part 1. Each number corresponds to a patient, patients #2 and 5 being implanted in both hemispheres.