PSYA01H3 Lecture Notes - Lecture 10: Occipital Lobe, Visual Cortex, Optic Chiasm

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15 Nov 2016
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PSYA01
Lecture 10: The Brain
Lateralization of function
- Left and right part of lobe in the
brain
- What the left does is sometimes
different than what the right
brain does
o But they both work
together
Occipital Lobe
- Part of the brain that handles vision
- At the back of the brain
- Optic chiasm from the eyes go back through the middle of the brain to the
occipital lobe
- Primary cortex and secondary cortex
- Primary visual cortex: Related to sight
o Edges
o Raw visual stimulation
- Vision comes from light
- Edges of different colours distinguish objects
- If you have damage to the occipital lobe, you will have damage to your vision
(scitoma)
o Anything that falls on a certain part of the retina, you can’t see
A black spot
- Agnosia: Something off with the visual recognition system
o Failure to know something by sight
o From vision alone, you can see something perfectly well, but you cant
identify or recognize it
o Procipagnosia: Cant recognize faces
Mostly anything else but faces
Fusiform Gyris used for this recognition
They can detect familiarity but they cant recognize
- Capgras syndrome
o Able to recognize, but don’t have the familiarity
Temporal Lobe
- Under ears
- Deals with sound
- If you damage the place of input, you will lose the input (Primary)
- Damage to left leads to language deficits leads to language deficits
o Losing ability to speak properly
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