Lecture 28 Flashcards
low level vision (early)
extraction of basic features from the visual image
mid level vision (middle)
combinging featured into objects
high level vision
object recognition and scene unterstanding
magnocellular channel processes info from
peripheral retina
magnocellular channel info is sent too laver _______ in V!
4C alpha
magnocellular channel is more sensitive to ______
motion
parvocellular channel processes info from
foveal region
parvocellular channel info is sent too laver _______ in V!
4C beta
parvocellular channel is more sensitive to ______
colour, form and detail
stereopsis
depth perception using both eyes
extrastriate cortex
the region of the cortex bordering the primary visual cortex containing multiple areas involved in visual processing
dominant input into dorsal pathway are from
M-channels
dominant input into ventral pathway are from
P-channels
inferotemporal cortex is important for
object recognition
information processed in what order in the IT
posterior > anterior
more anterior part of IT respond to
whole faces
Charles gross and colleagues found that neurons in the temporal lobe are relatively
insensitive to simple stimulus features
face vase illusion fMRI measurement tell us that when we see the faces
the fusiform face area is activated
in there a Jennifer Anniston cell
no
grandmother coding scheme
complex stimuli are represented by the activation of a single neuron that receive input from a unique set of lower lever neurons
population coding scheme
complex stimuli are represented by the activity of sets of neurons that receive inputs from combination sensitive neurons
feed-forward
can help to categorize
feed-back
can help to recognize and name things
kanizsa figure
seeing figures that arent there
structuralism
perceptions are the sum of atoms of sensation
gestalt school
whole greater than the sume of its parts
