PSY 250 Lecture Notes - Lecture 13: Calcarine Sulcus, Receptive Field, Visual Cortex

• School: Stony Brook University
• Department: Psychology
• Course: PSY 250
• Professor: Ryan Parsons

Document Summary

Visual pathways and organizaion, and visual neurons and their recepive fields. Need to resolve the ambiguiies in our visual world. About 90% of the axons leaving the reina use this pathway. Hemi-reina: each eye has temporal and nasal porions of the reina which cover diferent parts of the visual ields. Ex. let visual ield: nasal reina from let eye; crosses. Temporal reina from right eye; does not cross. Opic chiasm: where axons coming from the nasal reina cross. Lateral geniculate nucleus: thalamic nucleus that relays visual info from reina to the visual cortex. Informaion from let visual ield to right v1; vice versa: visual thalamus. P channels: get majority of input from cones, and respond to color and ine detail. M channels: get majority of input from rods, and are responsive to movement: primary visual cortex (aka v1 or striate cortex) Is buried deep in posterior region of occipital lobes, around the calcarine issure.