Class Notes - TheAgingBrain TheAgingBrain...

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The Aging Brain The Aging Brain
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Oldest Old - Centenarians Oldest Old - Centenarians Survival selection Clear-minded and Active 1/3 no signs of alzheimer’s 90% independent until 92 Limited period of decline Characteristics Genetic advantage Psychological resilience Healthy Lifestyle
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Theories of Cognitive Decline Theories of Cognitive Decline Speed of processing-slower performance on  cognitive tasks Reduced working memory capacity-problems  storing and processing at same time Interference theory-loss of ability to efficiently  ignore irrelevant information Neurological fidelity theories-widespread  declines in brain function See Table 14.5 in text.
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The Aging Brain The Aging Brain Reduced size Shrinking of neurons Fewer dendritic connections Loss of synapses and less likelihood to form new  ones Declining neurotic activity
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Class Notes - TheAgingBrain TheAgingBrain...

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