11.3 Notes Flashcards Preview

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Flashcards in 11.3 Notes Deck (25):
1

Magnocellular neurons

Located throughout the retina; identifies movement; black-and-white; takes most info from the rods

2

Parvocellular neurons

Located in and around the phobia; color, shape, and form

3

Which gender has more sensitive magnocellular pathways?

Males

4

Hemiretina

Half of the retina

5

Nasal hemiretinas

The half of the retina that is closest to your nose; crosses over to the other side of the brain

6

Temporal hemiretinas

Behalf of the retina that is closest to your temples; does not cross over to the opposite side

7

The left side of the world is processed in which half of the brain?

The right half

8

How do optical illusions work?

Your perception is changing based on which part of your brain is doing the interpreting

9

Retinopretectal circuit

Reflexive contraction of the people; brainstem pathway

10

Retinocollicula circuit

Coordinates visual, somatic, and auditory info to allow movement of eyes toward something; the "old" pathway; superior colliculus

11

Retinogeniculate circuit

Lateral geniculate nucleus (LGN) of the thalamus; includes the magnocellular and parvocellular pathways

12

Magnocellular pathway

Dorsal; where or how pathway; goes from V1 > MT and MST > posterior parietal cortex

13

Parvocellular pathway

Ventral; what pathway; goes from V one V1 > V4 > inferior temporal cortex

14

V4

Critical for color perception, faces, and recognizing people and the emotions associated with them

15

Parietal cortex

Spatial info

16

Visual agnosia

Without visual knowledge; the man who mistook his wife for his hat

17

Achromatopsia

Lack of color vision

18

Akinetopsia

Inability to see motion; caused by damage to MT bilaterally

19

Anton's syndrome

People who are blind but do not know they're blind

20

Prosopagnosia

Can't recognize faces; either they can't see a face or they can't recognize people; due to damage in Broadman's area 21 and 22

21

Charles Bonet syndrome

Experience hallucinations, but they are aware that what they are seeing is not real; the blind spot in their visual field is filled with hallucinations

22

How quickly is information sent from one hemisphere to the other?

In approximately 23 ms

23

Corpus callosum

Divided into five sections; only receives information from the cortex

24

Split brain surgery

Developed by Roger Sperry who studied people who had callosotomy to see which side of the brain did what; the surgery was performed to treat severe epilepsy; issue with the surgery: lack of symmetry

25

Ganglion cells

Output from your eyes; makes up the optic track; includes magnocellular and parvocellular neurons