294095
Description
Mind Map by lynda_ashford_25, updated more than 1 year ago
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Created by lynda_ashford_25
about 11 years ago
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Receptive Fields
- each cell in the visual system has a receptive field,
an area in visual space that excites or inhibits it. Is
the point in space from which light strikes the cell.
- Lateral
inhibition- the
reduction of
activity in one
neuron by
activity in
neighbouring
neurons.
- Simple cell- fixed
excitatory and
inhibitory zones.
- The more
light shines
in the
excitatory
zone, the
more the
cell
responds
- The more
light shines
in the
inhibitory
zone, the
less the cell
responds
- The more
light shines
in the
excitatory
zone, the
more the
cell
responds
- Complex cell-
do not respond
to the exact
location of a
stimulus.
Responds to a
pattern of light in
a particular
orientation only
where within its
large receptive
field.
- Inferior temporal
cortex- respond to
identifiable objects
and respond
accordingly to what
the viewer
perceives. Not
what it is
physically.
- Fusiform
gyrus- area
in the ITC for
recognising
faces
- Fusiform
gyrus- area
in the ITC for
recognising
faces
- Middle Temporal
Cortex- activated
by motion.
Receives input
from the
magnocellular
paths and detects
overall patterns.
- Damage can
result in motion
blindness. Can
see objects, but
not in which
direction or if
they are moving.
- Damage can
result in motion
blindness. Can
see objects, but
not in which
direction or if
they are moving.
- Feature detectors-
responses indicate
the presence of
particular features.
Respond strongly to
bar or edge shaped
patterns.
- Lateral
inhibition- the
reduction of
activity in one
neuron by
activity in
neighbouring
neurons.
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