Figure 1.

Anatomical localization of recording sites in the left hemisphere of monkey U. A, Inflated cortical surface illustrating the coronal sections drawn in B–E. B, A coronal MRI image showing portions of the LS and intraparietal sulcus (IPS). The filled pink region shows the dense core of signal produced by a manganese injection into the upper bank of the lateral sulcus, at a location where vestibular responses were identified physiologically. The outer pink contour shows the boundaries of the halo of less intense signal surrounding the injection. Manganese-induced responses have been superimposed on the baseline MRI image for this animal (see Materials and Methods). C–E, Coronal sections, spaced 4 mm apart, are shown from posterior (C) to anterior (E); cells located within 2 mm of each section were projected onto that section. Filled symbols with white borders represent single units that showed clear responses during sinusoidal translation and/or rotation, whereas open symbols with black borders illustrate cells that showed no response.