PS365 Lecture Notes - Lecture 55: Calcarine Sulcus, Akinetopsia, Prosopagnosia
Document Summary
Sts stream: characterized by polysensory neurons. Sts superior temporal sulcus: analysis of biological motion, structure motion can be identified. Haxby and colleagues (1994: summary of pet studies, found activation for facial stimuli. Left visual field represented in the right hemisphere fibers stay in the same hemisphere temporal hemi retina. Case db: v1 damage and blind sight: had an angioma in the right calcarine fissure, has cortical blindness. Case ji: damage and loss of colour vision: achromatopsia (lost colour vision) though visual acuity improved, specific damage was in the occipital cortex, overtime forgot what colour looked like. Case lm: v5 damage and the perception of movement: akinetopsia (loss of motion perception, crossing the road (car movement, unable to intercept moving object by using her hand, could recognize colour, write, read and recognize objects. Case d: right occipototemporal lesion, developed prosopagnosia: facial-recognition deficit.
