Localizing area MT. In each panel, blue indicates cylinder coverage (diameter = 1.65 cm), green crosshairs and red spots in B and C indicate the predicted location of MT determined by registering the images to a publicly available atlas (Lewis and Van Essen, 2000; Van Essen and Dierker, 2007) and color codes shown at bottom indicate the number of recording sites at a given location classified as a “hit” or “miss” of MT based on physiological properties, including tuning for the direction of visual motion and restricted receptive fields in contralateral space (Allman and Kaas, 1971; Dubner and Zeki, 1971; Zeki, 1974). A. Volume render showing external surfaces of the head and recording chamber. B. Surface reconstruction of the left cortical hemisphere. C. Flat map of the left cortical hemisphere. D. Horizontal section. E. Sagittal section. F. Coronal section. G. Section taken perpendicular to the long axis of the recording chamber at a depth corresponding to the location of MT. Circles indicate penetrations that included at least one recording site that was classified as MT based on physiological properties; crosses indicate penetrations with no sites that were classified as MT. B and C were generated using Caret (Van Essen et al., 2001). A and D–G were generated using AFNI (Cox, 1996).