2. Memory
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Memory
2008-10-19
Memory – The Retention of Information over time
HM – Case Study •
Man has seizures and had surgery – part of hippocampus removed
•
Forgot some events of the previous year or two
•
Couldn’t form new memories
•
Doesn’t remember tests, but performance improved
Whats in Memory? •
Recognition vs Recall
•
Primary Effect – people recall 1st stuff well – can make it into long term easily
•
Recency Effect – Words stay in short-term memory for a bit
Types of Memory •
Explicit – Stuff we can Explain ○ Episodic – personal experiences ○ Semantic – facts ○ Flashbulb – an episodic w/ tons of emotion (9/11, etc)
•
Implicit ○ Nonconseious memories (ie. HM w/ performance tests) ○ Priming: exposing a stimulus earlier so you are more likely to see it later.
Amnesia •
Anterograde Amnesia – disorder prevents retention of new info
•
Retrograde Amnesia – loss of memory of past events
Neurological Basis of Memory
2008-10-19
H.M
Hippocampus – consolidation of memory •
Hence childhood amnesia – hippocampus hasn’t fully developed
•
Alcohol induced blackouts – hippocampus shutdown
2008-10-19
Memory – The Retention of Information over time
HM – Case Study •
Man has seizures and had surgery – part of hippocampus removed
•
Forgot some events of the previous year or two
•
Couldn’t form new memories
•
Doesn’t remember tests, but performance improved
Whats in Memory? •
Recognition vs Recall
•
Primary Effect – people recall 1st stuff well – can make it into long term easily
•
Recency Effect – Words stay in short-term memory for a bit
Types of Memory •
Explicit – Stuff we can Explain ○ Episodic – personal experiences ○ Semantic – facts ○ Flashbulb – an episodic w/ tons of emotion (9/11, etc)
•
Implicit ○ Nonconseious memories (ie. HM w/ performance tests) ○ Priming: exposing a stimulus earlier so you are more likely to see it later.
Amnesia •
Anterograde Amnesia – disorder prevents retention of new info
•
Retrograde Amnesia – loss of memory of past events
Neurological Basis of Memory
2008-10-19
H.M
Hippocampus – consolidation of memory •
Hence childhood amnesia – hippocampus hasn’t fully developed
•
Alcohol induced blackouts – hippocampus shutdown
