visual perception

HideShow resource information
  • Created by: lewis
  • Created on: 02-12-15 21:33
The eye receives __ much information to send to the brain. It therefore encodes this information sending changes in __ and __
too, time (e.g. movement) , space (e.g. edges)
1 of 17
Encoding is achieved through __
2 of 17
Inhibition over time >
after-effect type illusions
3 of 17
Inhibition over space >
simultaneous contract type illusions.
4 of 17
The brain has to reconstruct (decode) the image. It does this via __
5 of 17
Excitation leads to a third type of illusion..
filling in.
6 of 17
Sensory processing starts where? The retina is part of
starts in the eye, retina part of the brain.
7 of 17
Receptive fields:
cells only see a small part of space.
8 of 17
Receptive field structure:
cells respond to light differently in different parts of their receptive fields.
9 of 17
Retinal ganglion cells have a centre surround receptive field structure. (produces inhibition over space)
10 of 17
many retinal ganglion cells also respond to sudden changes in light over time.
If the light stays on the cells are inhibition. (inhibition over time)
11 of 17
Sudden removal of a prolonged image produces..
an after image because inhibition has time lag.
12 of 17
We get colour vision by having..
3 cone photoreceptor types.
13 of 17
The 4th photoreceptor type (rods) support
night vision. We're all colour blind at night.
14 of 17
Cerebral chromatopsia / cortical colour blindness results from..
a loss of area V8. Vital for conscious colour perception.
15 of 17
Colour system is arranged much like spatial vision with:
1) centre-surround cells in the retina where centre and surround prefer different colours. 2) filling in in area V1. 3) thus we get simultaneous colour contrast, colour after-effects and the water colour illusion.
16 of 17
Colour constancy is our ability to..
ignore the colour of the light source (in V4/V8)
17 of 17

Other cards in this set

Card 2


Encoding is achieved through __



Card 3


Inhibition over time >


Preview of the front of card 3

Card 4


Inhibition over space >


Preview of the front of card 4

Card 5


The brain has to reconstruct (decode) the image. It does this via __


Preview of the front of card 5
View more cards


No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Theories of perception resources »