Sensation perception Flashcards
To appreciate some major processing steps necessary for visual perception, ranging from initial cortical processing to object identification and localization • To understand how these pathways can be dissociated with neuroimaging and neuropsychological patients
basic pathway of the eye
light enters the eye, hits the lens, image is refracted to the back end of the eye
image is vertically inverted because
of the lens
image if horizontally inverted because
of the optic chiasm
Path that 90% of visual input follows
eye to thalamus
Area in charge of color perception
Visual four area (V4)
impairment to process color on certain areas of the brain
achromatopsia
area involved in tracking motion
visual five area (V5)
impairment to see smooth movement
akinestopsia
cortical stream of processing the “what”
ventral stream
cortical area of processing the “where”
dorsal stream
basic aspects of objects are recognized at
occipital lobe
complex aspects of objects are recognized at
ventral stream
face detector module is located at
fusiform area (FFA)
evidence shows that FFA is also good for
expertise
disconnection between seeing and memory retrieval
visual agnosia
