Neuropsychological studies of perception and visuomotor control

Abstract

According to recent conceptualizations, there are two separate cortical visual systems-each with its own distinctive cortical and subcortical links-and these two systems respectively serve the functions of perception and of motor control. These ideas have been arrived at through a confluence of neuro-anatomical, electrophysiological, behavioural, and neuropsychological research. It is proposed that this distinction between two broad purposes of vision and their neural bases can provide useful working procedures for analysing both: (i) the nature of visuomotor processing in the normal brain; and also (ii) the abnormal patterns of visual processing that are seen in certain neurological conditions.