week 8 learning and memory

Question 1

what is the case of HM

Answer 1

had a seizure disorder and got bilateral removal of his temporal lobe (hippocampus) he later developed antergrade amnesia and couldn’t form new memories but could remember old things.

Question 2

retrograde amnesia

Answer 2

cannot remember events prior to damage

Question 3

anterograde amnesia

Answer 3

cannot remember events that occur after damage

Question 4

what could HM remember

Answer 4

could remember old memories

could repeat 7 numbers only back

can remember things he can rehearse but if distracted he would forget the numbers

memory gone the next day after task

he could do perceptual learning - broken drawings

classical conditioning

COULD NOT REMEMBER DECLARATIVE MEMORY

Question 5

what is human eyelid conditioning

Answer 5

unconditioned stimuli - air puff in the eye

the tone is conditioned stimulus

the conditioned response is eyeblink

after coniditoing, tone alone causes blink

Question 6

what happened when hM did eyelid conditioning

Answer 6

he would blink in response to tone but didn’t remember learning this

Question 7

what is Hebb’s law - 1949

Answer 7

puff of air goes to sensory neuron, which goes along the relay neuron, which makes action potential in motor neuron - blink.

at the same time you hear the tone. at first this not trigger an AP. when you pair them together, it will trigger the synapse at the same time, so the tone alone will condition the AP later.

A WEAK SYNAPSE WILL BE STRENGTHENED IF ITS ACTIVATION OCCURS AT THE SAME TIME THE POSTSYNAPTIC NEURONE FIRES

Question 8

what is declarative memory

Answer 8

explicit memory

memory of facts and events

includes episodic memory, semantic memory and spatial memory