lesson 7 memory decline and the healthy aging brain 2013
TRANSCRIPT
Lesson 7 - Memory
Decline and the Healthy Ageing
BrainSaturday, 30 March 13
From last Lesson........
What role does the hippocampus play in memory?
Saturday, 30 March 13
From last Lesson........
Research suggests that the hippocampus is critical to the formation and consolidation of memories, playing part in deciding if information received a by the senses is worth remembering, then organising memories before directing them to other sections of the brain.
What role does the hippocampus play in memory?
Saturday, 30 March 13
Outcomes (What you need to know and be able to do)• Explain how memory changes over a lifespan• Explain amnesia resulting from brain trauma and
neurodegenerative diseases including dementia and Alzheimer’s disease
• Compare how memory declines over the lifespan with amnesia resulting from brain trauma and neurodegenerative diseases including dementia and Alzheimer’s disease
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Amnesia – Loss of memory, partial or complete, temporary or permanent. Can be caused by either of:
Amnesia
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Amnesia – Loss of memory, partial or complete, temporary or permanent. Can be caused by either of:
Brain trauma – damage inflicted through injury interferes with functioningE.g. Brain injury, stroke, drug abuse etc
Amnesia
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Neurodegenerative disease – decline in structure and function of neurons E.g. Alzheimer's disease
Amnesia – Loss of memory, partial or complete, temporary or permanent. Can be caused by either of:
Brain trauma – damage inflicted through injury interferes with functioningE.g. Brain injury, stroke, drug abuse etc
Amnesia
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Retrograde AmnesiaCant remember old informationEvents before the injury lostUsually temporary and caused by a blow to the headMemory of events immediately preceding the injury are permanently lost (interruption or consolidation)
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Anterograge AmnesiaCan’t make new Long Term memories ofevents that occur after the injury – hippocampus damage commonCannot transfer information from STM to LTM
Retrograde AmnesiaCant remember old informationEvents before the injury lostUsually temporary and caused by a blow to the headMemory of events immediately preceding the injury are permanently lost (interruption or consolidation)
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Anterograge Amnesia
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Retrograde Amnesia
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Older people Do take longer to learn new information
STM – Depends on the task, easy one part tasks are ok. Tasks that require divided attention are challenging for older people.
LTM - Episodic down, Procedural same, Semantic Same
Memory decline over the lifespan
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Not necessarily inevitable,however some natural decline is normal. Amount of decline depends on:
•How retention is measured - Recall down, Recognition same
•Motivation to remember •Self confidence•Nervous system condition
Memory decline over the lifespan
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