Ch 4 review Flashcards
cortical magnification
electrical signals associated with visual scenes impinged upon the fovea are allotted more space on the cortex than the signals associated with the periphery
benefit of cortical magnification
resolution, NOT magnification
what we perceive does not exactly
match the picture in the brain
cortical columnns
group of neurons forming a cylindrical structure through the cerebral cortex of the brain perpendicular to the corticall surface
parts of the cortical column
-location
-orientation
-hyper column
-ocular dominance
location columns
receptive fields at overlapping areas on the retina that cover the entire field by tiling
orientation columns
all neurons within a single column will respond best to a particular orientation
*all orientations seperate
hyper columns
-one location column with many orientation columns
**not all location columns are hypercolumns
ocular dominance columns
-respond preferentially to one eye over the other
-two ocular dominance column within each hyper column
ventral pathway
-what pathway
-signal moving away from occipital lobr toward temporal lobe
dorsal pathway
-where and how pathway
-from occipital lobe to parietal lobe
modularity
areas of the brain specialized for processing info about a specific stimulus
**like faces, places, bodies
Fusiform face area
-FFA
-part of fusiorm gyrus on underside of brain below IT cortex
-involved in face perception but can go beyond just faces
face perception
recognizing the actual face NOT the person or facial expression
Parahippocampal place area
-PPA
-for identifying places
-located in the temporal lobe
