Week 6.4 Flashcards
(69 cards)
Where are implicit and explicit memories stored?
- implicit: more diffusely (cerebellum and striatum)
- explicit: medial temporal lobe
Something will stay in your short-term memory for as long as you ___.
rehearse it
The process of transferring immediate to short-term memory is called what?
working memory
Where does the transfer of information from working memory to long-term memory occur?
in the limbic circuits
Working memory is mediated by what brain region?
the dorsolateral prefrontal cortex
Long-term memory can be relatively unaffected even if ___ of the cortex has been damaged.
25%, they are resistant because they are stored in a network
Which memory system depends on the intactness of the cortex?
working memory
Long term potentiation is mediated by what NT system?
NMDA receptors and glutamate
What is memory consolidation?
the process that strengthens a memory after it’s initial acquisition
The memory circuit is named what?
the Papez circuit
What brain region is involved in short-term memory?
the Papez circuit
What sort of damage is required to disrupt short-term memory?
bilateral damage to the Papez circuits
How can we test working memory?
- digit span
- 5-7 unrelated word or numbers
- repeat a brief story
Orientation to time and place is a test of what kind of memory?
short-term
How can we test short-term memory?
- orientation to time and place
- remember a word list for three minutes
What are some etiologies for isolated amnestic syndromes?
- large frontal lesion
- midline thalamic lesion
- basilar occlusion
- thiamine deficiency
- anoxia
What is “hollywood” amnesia?
a psychogenic memory loss in which short-term memory is preserved but long-term memory is severely compromised
What kind of memory problems are common with normal aging?
- forget specific dates and names
- remember what they forgot
- can accurately track ongoing events
- memory deficit is inconsistent
- remote memories are forgotten more than recent
What sorts of memory are affected in the early and late stages of Alzheimer’s disease?
- early: short-term memory
- late: working and long-term memory
Trauma will most often affect what kind of memory?
short-term memory
What is anterograde amnesia?
the inability to form new memories
What is retrograde amnesia?
the inability to retrieve formerly learned information
Wernicke’s encephalopathy is due to what?
thiamine deficiency
Which brain regions are selectively vulnerable to thiamine deficiency?
- dorsal medial thalamic nuclei
- maxillary bodies
