Other conditions that affect memory - dementia - alzheimers disease
3 important questions on Other conditions that affect memory - dementia - alzheimers disease
what is alzheimers disease?
-most old people dont get it, thought too many do.
- only in certain people as consequence of specific neurological conditions
what are 4 characteristics of alzheimer?
1. loss in number of neurons and connections, mostly in frontal and temporal lobes
2. presence of neurofibrillary tangles -> impeding ability to effectively transmit signal
3. presence of amyloid plaques -> makes difficult for neurons to fuinctin cause they degenerate axons
4. decrease in acetylcholine production -> critical to learning and memory
what memory changes occur with alzheimer?
1. short-term memory impaired: no in maintaining info but controlling flow of thought in central executive
- trouble managing memories in dual-task
- no recency effect for large sets of info
2. impaired episodic memory, with Ribot gradient
3. eventually also semantic memory succumbs
- more trouble with general public info then autobiographical
4. less effect on implicit memory & metamemory processes
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