Spike-responses of single binocular neurons were recorded from a distinct part of primary visual cortex. the parastriate cortex (cytoarchitectonic area 18) of anaesthetized and immobilized domestic cats. Functional identification of neurons was based on the ratios of phase-variant (F1) component to the mean firing rate (F0) of their spike-responses to optimized (orientation. direction. https://nerdzoics.shop/product-category/dioramas/