cortical centers for vision

Question 1

midget are aka ___ aka ____. Parasol cell are aka ___ aka___

Answer 1

x, parvocellular. y, magnocellular

Question 2

Heirarchy of cortex receptor fields and fxns of each

Answer 2

simple cell=orientation detectors (concentric receptive fields)<hypercomplex cells=feature detectors (extract form or 3D info)

Question 3

heirarchy from retina to simple cell

Answer 3

multiple ganglion cells with lined up fields project to a single simple cell in cortex.

Question 4

heirarchy from simple to complex

Answer 4

Multiple simple cells with same orientation but diff retinal positions project to single complex cell

Question 5

heirarchy from complex to inferotemporal cortex

Answer 5

multiple complex cells converge on single hypercomplex cell which go to feature detectors in IT cortex

Question 6

when it comes to feature detectors is form or orientation more imporant

Answer 6

form

Question 7

prosopagnosia results from damage to

Answer 7

occipito-temporal or fusiform gyrus

Question 8

how do we get depth perception

Answer 8

based on horizontal retinal image disparity (non-correspondence of image locations on retinas)

Question 9

p or x pathways become ___ paths which convey___. M or y become ___ which convey___

Answer 9

ventral path/temporal path, what (form,color), magnocellular, “action” ; dorsal path, parietal path where (space,motion), parvocellular, “perception”

Question 10

thick stripes perceive ___ and are part of ___ pathway. Thin stripes, blobs and convey___ and are part of___. Interstripes and interblobs are part of ___ and convey___

Answer 10

motion and depth, dorsal. color and form, ventral. both pathways, depth, form and color

Question 11

deprivation of input to an eye during sensitive period results in___

Answer 11

reduced size of that eye’s ocular dominance columns (each of which contain orientation columns