Vision, Visual Cortex, and Frequency Analysis

D.H. Hubel and T.N. Wiesel opened the modern era of visual cortical physiology with their paper on the receptive field properties of simple and complex cells in the visual cortex of the cat. Both cell types are selectively responsive to the orientation of an elongated slit of light. These neurons may be sensitive either to one or both directions of movement perpendicular to the preferred orientati…