Visual sensitivity following inferotemporal and foveal prestriate lesions in the rhesus monkey

Performed ablations of inferotemporal (2 Ss) and of foveal prestriate cortex (2 Ss) in rhesus monkeys, impairing their visual learning. In order to determine if a sensory loss was associated with either lesion, the detectability of a light flash under scoptopic conditions was measured with a signal-detection procedure with the monkeys and with 2 male undergraduates. Neither lesion produced a decrease in sensitivity, although both produced the usual visual-learning deficit. Sensitivity of the human Ss was well within the limits of unoperated animals. (27 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved).