L14 Brain circuits II

Question 1

what is the source memory task

Answer 1

• encoding words that led to recognition with source memory activated hippocampus and parahippocampus
• envoding that produced recognition without source memory activated only perirhinal cortex

Question 2

perirhinal cortex role in familiarity:

Answer 2

• perirhinal cortex activations found systematically with New-Old meta analysis
• basically, perirhinal has role in distinction between new and old (familiarity)

Question 3

what evidence challenges selective hippocampal effect for recollection?

Answer 3

• encoding study
• used confidence ratings to demonstrate that differential effects are just due to confidence
• if confident - you activate hippocampus
• so tests strength of memory

Question 4

montaldi’s own study

Answer 4

• there is clear evidence that even when memory strength is matches, hippocampus is not activated when memory is based on familiarity
• modulation of familiairty has no effect on hippocampus, strong evidence that the perirhinal cortex does support familiarity while the hippocampus only supports recollection

Question 5

what part of the brain is involved in encoding diff types of recognition info?

Answer 5

thalamus
- mediodorsal thalamus as mediator for familiarity

Question 6

corresponding pattern separation tests target?

Answer 6

familiarity

Question 7

non-corresponding pattern separation tests target?

Answer 7

recollection