Lecture 8 Q & A

Question 1

Explain the face processing cortex

Answer 1

Fusiform face area,
face specific cells found in this region in humans and non-human primates. Legions can cause prospangosia.

Question 2

Explain the face experiment

Answer 2

Cells in inferior temporal neorctotex of monkeys respond to faces of other monkeys sometimes only in certain orientations, sometimes only to particular monkeys. (Face build to recognize faces from many angles).

Question 3

Explain the old rule of “perceptual constancy”

Answer 3

This was the idea that the primary sensory cortex was a fixed homunculus, it had to stay constant. This was not true, there is free real estate to make more important regions.

Question 4

Describe norman Weinberger’s work

Answer 4

He focused on the learning auditory cortex and used rapid classical conditioning (2-3 trials) which is declarative in nature. He found the “tuning curve” best frequency for cell. Going into auditory cortex and recorded as a given cell responses to the various frequencies.
Findings: different parts of the sensory cortex apply to different parts of the body. Auditory cortex tuned to different frequencies.

Question 5

Explain the steps to the learning auditory cortex experiment.

Answer 5

1) Establish tuning curve, BF
2) Give 2-3 classical conditioning trials using a frequency that is NOT in the BF paired with a foot shock.
3) Redo #1

Question 6

Does Pavlovian conditioning that takes a long time go to the hippocampus?

Answer 6

No, it instead goes to the cerebellum

Question 7

Explain the roadblock experiment

Answer 7

Maze: take rat let it run for many trials. Get to food and end.
Hull: rat learned S-R chain links (some faster than other 3 links)
Tillman: Behavior reeks of cognition, rats are making a map in their brain that they can use.

Question 8

Explain the curve ball in the road block test (probe trial)

Answer 8

Once the first block took place, Tiollman thought it would go to path 2 and Hull thought it would also be path 2.
Once the second block too place,
Tollman Cognition path 2 to get food
Hull: chain link path 2 no food (never goes to path 3).

Question 9

Explain the starburst experiment

Answer 9

Block local path of starburst.
Hull: rat’s got nothing
Tollman: rat will adapt
Hull: rat will try next closest stop before giving up
Tollman: go towards the area where there is food.

Question 10

What did Tollman find?

Answer 10

He found that rats mostly go towards where the food was. Compartamentalized learning SR and Cognition.
“There is more than one kind of learning”

Question 11

Explain double dissociation experiments

Answer 11

they are complimentary

Question 12

Describe rat ball experiment

Answer 12

Rat in water can see 2 balls: visual discrimination
1) Horizontal stripes
2) Vertical Stripes
One ball is used as an escape so that is habitulized.
Rat see go and see stop. but for spatial discrimination the ball type doesn’t matter its more related to the placement.

Question 13

What were the findings of the rat ball experiment? (visual discrimination)

Answer 13

After being leisured, Hippocampus can do it fine.
Caudate can’t do it. for visual discrimination.

Question 14

What were the findings of the rat ball experiment (spatial discrimination)

Answer 14

Hipocampus can’t do it but caudate can do it.

Question 15

Teach rat both cues and see what happens

Answer 15

Put ball in new place, rat goes to ball (normal rat).
Hippocampus less rat is also able to go find the ball.
No striatum= see ball in new phase and don’t go to the ball.
1) Hippocampus area
2) Then to ball

Question 16

Teach rat both cues and see what happens

Answer 16

Put ball in new place, rat goes to ball (normal rat).
Hippocampus less rat is also able to go find hte ball.
No striatum= see ball in ne phase and don’t go to the ball.
1) Hippocampus area
2) Then to ball

Question 17

Describe the radial arm maze experiment (triple dissociation)

Answer 17

Find 8 pieces of food, requires flexible memory.
See light, go to light.
Requires S-R robot like memory, Habit.
Put rat in a room full of fruit loops vs. putting a rat in a room with no food.
Conditioned place preference: more emotionally arousing.
Have rat pick which area to go to = they go to the fruit loop room.

Question 18

T Test Hull vs. Tollman interpretations

Answer 18

Put rat in T maze with one end having food and the other not.
Have rat find food (right end) and be happy.
Then flip maze and ask rat to find food.
Tollman predicted that rat would go to the left (new place with food).
Hull predicted that the rat would turn right (following initial S-R response).
Result: a bit of both!
More trials and training - more likely to turn right Hull Rats.
Less training = Tollman rats.
Thus: its split 50/50 a bit of both is correct!

Question 19

Explain the cannula rats experiment

Answer 19

Inject rats with a drug and it lasts about 20 min. The way they know this is because they spin when injected in one side and don’t spin when injected on both sides.