Psychology 2115A/B Chapter 4: Chapter 4

• School: Western University
• Department: Psychology
• Course: Psychology 2115A/B
• Professor: Dr.Mark Holden

Document Summary

Outline: spatial organization, columns, visual streams, developmental dimension. High areas of brain activity lose some oxygen which will respond strongly to magnetic field. Columns: cortical columns: small volume of tissue running into the cortex (perpendicular from surface) Visual streams: occipital lobe: contains primary visual cortex. This is where the visual signals first go: each eye sends signals to both sides of the brain, visual info then spreads to parietal and temporal lobes. Perception: difficult to separate them in healthy controls (people without brain damage, one promising way is with visual illusions line estimation task, perceptual pathway fooled but not action, suggest they are separate mechanisms even in healthy controls. Modularity of the visual and association cortex: visual pathways, ventral pathway: per(cid:272)eptio(cid:374) path(cid:449)ay or (cid:862)(cid:449)hat(cid:863) path(cid:449)ay. Lgn v1 v2 v4 inferotemporal cortex: dorsal pathway: a(cid:272)tio(cid:374) path(cid:449)ay so(cid:373)eti(cid:373)es (cid:272)alled (cid:862)(cid:449)here(cid:863) or ho(cid:449)(cid:863) path(cid:449)ay. In both cases, visual receptors (sensation) are intact, but the perception of objects is impaired.