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Glossary of Lecture 8

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Created by jamiegallup

First place of convergence for each eye
V1
Not until synapse in __ that inputs from two eyes are together
V1
Neuron turned on by both eyes now:
binoculuar vision
Number does not equal __
flow
Sensory Pathway:
sensory receptor --> thalamic nucleus --> primary cortex --> secondary cortex --> teritary/ multi modality association cortex
Sensory receptors:
M and P cells
Thalamic nucleus:
LGN: magno and parvo pathway
Primary Cortex:
v1
Secondary cortex:
modality specific
Teritary/multi modality cortex:
higher visual processing, combine input from mult visual regions to consider visual percept
MT:
Area middle temporal
MST:
middle superior temporal
TEO/PIT:
posterior inferior temporal cortex
TE/AIT:
anterior inferior temporal cortex
As move up the hierarchy of visual processing the receptive fields become more __ and they fire to their __ stimulus
selective, designated
Sensitive to faces:
TE anterior inferior temporal cortex
sensative to color
V4
simple cells in V1 calculate __
edges
Info from many simple cells feed into one complex cell in __, __, __ etc to from edges, corners, etc
v1, v2, v3
Info from many complex cells feed into __ order visual regions to form shapes or faces
higher
Color and motion visual stimuli are __ specific
attribute
Motion area:
MT/V5
Color:
V4
Cortical color blindness:
achromatomatopsia
motion blindness:
akinetopsia
achromatopsia and akinetopsia are: __ specific
attribute
Zeki and colleagues found that movement detection was more __ and that what/where to __/__ were segregated early in the __ stream
dorsal, temporal/parietal, ventral
Cortical achromatopsia has damage to the occipital __ region in __
temporal V4
Cortical achromatopsia is damage to the __ pathway
what
Akinetopsia lesion along the __ __/__
dorsal v5/MT
Akinetopsia is damage to the __ pathway
where
5 implications of attribute specific deficts:
1. magno and parvo cellular pathways give rise to higher level attribute perception
2. atribute deficits reveal unique fxns performed by areas
3. special purpose modules perform operations in parallel
4. modality specific
5. modules provide input to upstream computations



What did the Zeki PET scan study try and do?
Show that there were distinct color and motion activated brain regions
What were the experimental and control groups of the Zeki PET scan study?
Color: control: gray rectangles
experiment: color rectangles
motion: control: not moving (black)
experiment: moving (black)


What did the Zeki PET scan study find?
Motion: V5/MT
Color: V4

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