PSYC 101 Chapter Notes -Two-Streams Hypothesis, Visual Agnosia, Parahippocampal Gyrus

• School: UBC
• Department: Psychology
• Course: PSYC 101
• Professor: Barbara Cox

Document Summary

Perception- a rapid, automatic, unconscious process by which we recognize what is represented by the info provided by our sense organs. Visual info proceeds from retina to the thalamus then to the primary visual cortex. Primary visual cortex is organized into modules. Module- block of cortical tissue that receives info from the same group of receptor cells. All of the neurons within a module receive info from the same small region of the retina. Neural circuits within each module analyzes specific info from their own particular part of the visual field- the receptive field. Receptive field- portion of the visual field in which the presentation of the visual stimuli will produce an alternation in the firing rate of a particular neuron. Different circuits detect orientation & width of lines, colour & movement of those lines. However, perception of objects & the totality of the visual scene does not happen here.