J. Neurophysiol. 1997 . Most neurons in the visual cortex can be activated by stimulation through either eye. These binocular neurons are thought to serve as the first stage of processing of stereoscopic depth perception. Left and right eye receptive fields are illustrated here for a simple cell in the primary visual cortex of the cat. Each of these profiles is shown as a density plot, in which green and red indicate regions that are responsive to a bright bar or a dark bar, respectively.
Brighter regions are more responsive.
The gradual changes in spatial receptive field structure as a function of time are related to motion selectivity.