PSY 256 Lecture Notes - Lecture 16: Facing Reality, Implicit Memory, Amyloid
Document Summary
Life expectancy: 78. 74 years as of 2012. 4-7 years longer for women than men. As age increases, sex differences decreases: over age 75: Dif culty with adl: 9: activities of daily living. Dif culty with iadl: 17: instrumental activities of daily living, maximum lifespan. Aging of the nervous system: loss of brain weight. 5-10% by 80 years: neuron death and enlargement of ventricles, compensations. Uses a larger part of the brain for the task: autonomic nervous system decline, heat waves/ cold spells, stress hormones. Aging at the level of tissues and organs: cross-linkage theory of aging. Monday, march 13, 2017: gradual failure of endocrine system. Less growth hormone: genetically programmed decline in immune system functioning. Scatters light, blurs images and increases sensitivity to glare: incidence of cataracts increases tenfold from mid to late adulthood, yellowing of lens, shrinking of pupil, clouding of vitreous, reduced dark adaptation, depth perception and visual acuity. Natural cells death in the inner ear.
