1
Q
What is seeing vs perceiving?
A
- sensory system (white light, black light): the eye and exactly what we sense from our environment
2
Q
What is the perceptual system?
A
- the brain
- how we put together what we sense into a visual picture ~ figuring out what we are seeing
3
Q
What is Balint’s Syndrome?
A
- results from parietal lesions
4
Q
what are some symptoms for balint’s syndrome?
A
- ocular apraxia: difficultly shifting gaze, fixating, following movement - glaze tends to wander
- optic ataxia: inability to reach for items under visual guidance
- simultagnosia: unable to focus on more than one thing at a time (visually)
5
Q
What is Prosopagnosia?
A
- inability to identify familiar faces
- can identify the person by voice
- can identify gender, age, and emotions of faces
- led to the FFA debate
6
Q
What was the FFA debate?
A
- Expert vs. face area
- scientist argue that the FFA is not sensitive to faces, but instead is sensitive to identification of things that we can expertly identify
- we’ve all seen so many faces that we are effectively “face experts”
7
Q
What is greebles?
A
- train people about the different types and check their activation
- major problem: they are face-like
8
Q
How does the eye work? - 5
A
- key part: retina ~ can’t see without it
- translate light waves into an electrical signal our brain can process
- concave: object on retina is translated upside-down
- photoreceptors: rods and cones
- optic disk/optic nerve: area in the retina where nerves and blood vessels exit the eye and forms a blind spot
- fovea: area in center of retina
9
Q
What are the 4 main types of visual processing neurons?
A
- 1) ganglion:
