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Aging is associated with many changes in the central nervous system, such as mild atrophy of the cortex, which is considered non-pathological. Aging is also associated with many neurological and neurodegenerative diseases, such as amyotrophic lateral sclerosis, dementia, mild cognitive impairment, Parkinson's disease, and Creutzfeldt–Jakob ...
However, research suggests that the aging process is associated with several structural, chemical, and functional changes in the brain as well as a host of neurocognitive changes. Recent reports in model organisms suggest that as organisms age, there are distinct changes in the expression of genes at the single neuron level. [4]
Normal aging is associated with a decline in various memory abilities in many cognitive tasks; the phenomenon is known as age-related memory impairment (AMI) or age-associated memory impairment (AAMI). The ability to encode new memories of events or facts and working memory shows decline in both cross-sectional and longitudinal studies. [8]
“Some people have such a negative views of the elderly that they don’t want to be associated with them,” Rowe said. “So if they’re 70 years old, they’ll say old age begins at 75.
Mild neurocognitive disorders, also referred to as mild cognitive impairment (MCI), can be thought of as a middle ground between normal aging and major neurocognitive disorder. [11] Unlike delirium, mild neurocognitive disorders tend to develop slowly and are characterized by a progressive memory loss which may or may not progress to major ...
Sensory changes and degeneration begin to be common in midlife. Degeneration can include the breakdown of muscle, bones, and joints. Which leads to physical ailments such as sarcopenia or arthritis. [45] An elderly couple exhibiting typical signs of physical aging. At the sensory level, changes occur to vision, hearing, taste, touch, and smell.
Gerontology (/ ˌ dʒ ɛr ən ˈ t ɒ l ə dʒ i / JERR-ən-TOL-ə-jee) is the study of the social, cultural, psychological, cognitive, and biological aspects of aging.The word was coined by Ilya Ilyich Mechnikov in 1903, from the Greek γέρων (gérōn), meaning "old man", and -λογία (), meaning "study of".
Mild cognitive impairment (MCI) is a diagnosis that reflects an intermediate stage of cognitive impairment that is often, but not always, a transitional phase from cognitive changes in normal aging to those typically found in dementia, [1] especially dementia due to Alzheimer's disease (Alzheimer's dementia). [2]