Lecture 3

Question 1

Free energy principle

Answer 1

Brain wants to limit the long term average of suprise to keep sensory entropy low

Question 2

CS-pre exposure

Answer 2

during the habituation phase, show the CS by itself for an extended time, manipulation of how long the habituation phase is

Question 3

CS-pre exposure the light experiment

Answer 3

Yellow light was the CS, was pre-exposed, compared to pre-exposure to a blue light (NS), learning was much lower to those pre exposed to the blue light.

Question 4

Pre exposure and habituation

Answer 4

CS- pre exposure is context specific where as habituation is non-context specific

Question 5

Pre exposure and inhibition

Answer 5

must pass the summation and retardation test, will pass the retardation test but will fail summation test

Question 6

Generalisation

Answer 6

Little albert, generalisation does not last after extensive trials, more exposure in the acquisition phase will result in better discrimination

Question 7

Rescorla Wagner model

Answer 7

explains learning prediction of the US, expected strength of the US vs actual strength of US.
Assumes that US is fixed. how much association can be learned vs the expected/current association between the stimulus

Question 8

Taste aversion

Answer 8

• Usually acquisition occurs over a number of trials in association
• Long-delay conditioning is usually less effective
  However, taste aversion can occur within just one association
  e.g. eating something and only feeling it after hours is long delay and you will never have that food again

Question 9

garcia effect

Answer 9

there is not equipotentiality between stimulus
association.
sickness is learnt easier when CS is food rather than noise and light and opposite for association of shock

Question 10

Heroin addiction example

Answer 10

environment cues helped body prepare for taking heroin. If environment cues where not there more chance of death.