Simple and complex visual motion response properties in the anterior medial bank of the lateral suprasylvian cortex

Abstract—The cortical regions surrounding the suprasylvian sulcus have previously been associated with motion pro-cessing. Of the six areas originally described by Palmer et al. [J Comp Neurol 177 (1978) 237], the posteromedial lateral suprasylvian (PMLS) cortex has attracted the greatest atten-tion. Very little physiological information is available con-cerning other suprasylvian visual areas, and in particular, the anteromedial lateral suprasylvian cortex (AMLS). Based on its cortical and sub-cortical connectivity patterns, the AMLS cortex is a likely candidate for higher-order motion process-ing in cat visual cortex. We have investigated this possibility by studying the receptive field sensitivity of AMLS neurons to complex motion stimuli. Neurons in AMLS cortex exhibited large (mean of 354°2) and complex-like receptive fields, and most of them (74%) were classified as direction selective o