PSYC 215 Lecture Notes - Lecture 4: Somatotopic Arrangement, Homunculus, Visual Field

• School: Emory University
• Department: Psychology
• Course: PSYC 215
• Professor: Daniel Dilks

Document Summary

Sensory cortex is topographically organized, and fully formed after initial development (not true in s1) After d3 amputation (in monkey) deprived cortex of information from digit. What happens is the neurons that used to respond to touch on digit 3 begin to respond to touch on d2 and. Arm is next to face cortex in somatotopic map. So sensory cortex (somatosensory, visual) is topographically organized, and. Remains plastic throughout adulthood (at least s1) what about v1? neurons. Visual field: upper left visual field gone. So 5 is representing all of 1-4 as well as still region 5. This is a case of cortical organization in adult human v1! (neural evidence) Seeing something in region 5, he would see it in the blind regions 1-4. Seeing a circle: cigar like , seeing a square rectangle , seeing a triangle. = point of which he sees the two stimuli as the same. Reaching out for diff sized rectangles in visual field.