PNB 2XA3 Chapter Notes - Chapter 1-2: Occipital Lobe, Parvocellular Cell, Visual Cortex

• School: McMaster University
• Department: Psychology, Neuroscience & Behaviour
• Course: PNB 2XA3
• Professor: David I Shore

Document Summary

Lateral inhibition: a pattern in which cells, when stimulated, inhibit the activity of neighboring cells, edge enhancement: inhibition of neighboring cells exaggerated the contrast at the edge. Highlights the information that defines a(cid:374) o(cid:271)je(cid:272)t"s shape- information crucial for figuring out what the object is. Single neurons and single-cell recording: procedure through which investigators can record, moment by moment, the pattern of electrical changes within a single neuron, how often they fire, spikes per second, defines the cells receptive field. Multiple types of receptive fields: center-surround cells: fire at their maximum rate when light is presented in a small, roughly circular area, in a specific position within the field of view. Form perception: necker cube: perceive it one way then another, no proper interpretation. Unconscious inference: size constancy may be achieved not by focusing on the images themselves but on the unchanging relationships, helmholtz: simple inverse relationship between distance and retinal image size, unconscious inference: your interpretation of the retinal images.