SDS150R Lecture Notes - Lecture 17: White Matter, Procedural Knowledge, Dysthymia
24 Apr 2016
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Sds 150r - lecture 17 - physical and cognitive development in late adulthood. Life expectancy: increases as adults get older, even longer among women gender gap has been narrowing. Self-rated health: regard health as excellent health = single largest factor determining the trajectory of adult"s physical/mental status over the years beyond age 65 elderly still maintain optimism which actually helps them against long-term effects. Heredity: identical twins = more similar in length of life, more similar illness as well. Health habits: smoking, low lvls of physical activity, being underweight/overweight linked to increased risk of death over succeeding 17 years. Most crucial variable = physical exercise, linked to greater longevity and lower rates of disease, seems to be more important in later years. Four main changes: reduction of brain weight, loss of grey matter, decline in density of dendrites (most central), slower synaptic transmission speed.
