PSYC 2700 Chapter Notes - Chapter 3: Occipital Lobe, Saccade, Sensory Memory

• School: Carleton University
• Department: Psychology
• Course: PSYC 2700
• Professor: Chris Herdman

Document Summary

3 memory (information processing structures): sensory memory (registers, short-term store, long-term store. How to differentiate the stores: encoding, duration, capacity, type of code(s) Light waves projected onto retina: rods, cones, bipolar cells, ganglion cells. First to be stimulated by light waves. Bipolar cells connect rods and cones to ganglion cells. 1st to be stimulated by light waves: neural firing pattern from rod/cones to bipolar cells, and then to ganglion cells. Axons of ganglion cells form bundle called optic nerve. Nerve projects back to send neural message to visual cortex in occipital lobe. Only fraction of light waves reaches retina. 120m rods, 7m cones, only 1m ganglion: some cones have own bipolar, but many rods converge onto 1 bipolar, convergence especially in 20+ degrees. Saccades: eyes move in jerky patterns, not smooth continuous, variable: 25ms 175ms, nothing seen during saccade. Fixations: eyes pause to foveate and take in information, fovea is where the highest resolution in eye is.