PSYC 3300 Lecture Notes - Lecture 21: Ganglion Cell, Receptive Field, Occipital Lobe
Document Summary
Visual processes: visual processing, the visual system acts as a series of filters, cells throughout the system are editing the incoming information, highlights significant visual features in the environment. Lateral inhibition: begins with lateral inhibition, each neuron"s activity inhibits the activity of its neighbors, dark appears darker compared to lighter. Input primarily from cones in and near fovea: color sensitive, carry detailed visual information, magnocellular (large) rods. Input mostly from rods: not color sensitive respond to movement, broad outlines, koniocellular: not as important extra credit, visual information. Information from the right half of each eye will be send to the right hemisphere. Thalamus: receptive fields in the lgn are similar to ganglion cell receptive fields, center + surround = receptive field, primary visual cortex. Information travels from the lgn of the thalamus to the primary visual cortex (area v1) of the occipital lobe: area v1 is necessary for conscious visual awareness, first cortical area involved in visual processing.
