growing old Flashcards
changes in social-emotional aspects with age
living with limitations, smaller world, purpose in love
dual aging
more older adults, increased longevity
why doesn’t natural selection select for successful aging genes
doesn’t contribute to passing on our genes or successful adaptation
illnesses that become more prevalent with age
cardiac/vascular diseases, brain (Alzheimer’s, Parkinson’s, Huntington’s), other (other internal organs, broken bones (hip), cancer, diabetes)
changes in the circadian rhythm
flattening of the 24 hour rhythm, fewer hours of deep sleep, highest peak shifts from afternoon to morning, preference and increased need for naps
how much % do people lose between 20 and 70
10
which part of the brain is the last to mature in both ontogenesis and phylogenesis
prefrontal cortex - last in, first out
what are the largest changes in the brain
prefrontal cortex and MTL (hippocampus)
prefrontal cortex changes at a structural level
gray matter - reduction in the number of cells (due to cell death) or may be a sign of neuronal shrinkage
white matter - axonal abnormalities, slowed neurotransmission
what is hemispheric asymmetry reduction
on tasks leading to unilateral prefrontal activity in young adults, older adults tend to show bilateral recruitment (might be compensatory activation or pathological changes such as hemispheric release from inhibition)
changes in the emotion processing regions
the amygdala and orbitofrontal cortex are relatively spared - minimal atrophy
cognitive aspects affected in aging
regulative functions, orienting, self-menagment ability, memory
regulative functions
stability vs flexibility (switching between tasks, shielding of goals), working memory (updating relevant information), planning, impulse control
orienting
3D space, temporal space, contextual space, autobiographical space
self-management ability
taking initiative, investing (ensuring that you have enough hobbies to keep you active), positive frame of mind, variety, multi functionality, self-efficacy
memory
failure to remember the right word, failure to remember the contextual details of an event
domain-general theories of aging
based on the hypothesis that there is a shared ability that underlies all of the tasks on which older adults are impaired