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This phenomenon is known as the "paradox of ageing". This may be a result of social comparison; [147] for instance, the older people get, the more they may consider themselves in better health than their same-aged peers. [148] Elderly people often associate their functional and physical decline with the normal ageing process. [149] [150]
Age-related changes are observed in fine structure of spindle nerve innervation in the form of axonal swelling and expanded/abnormal endplates. [6] When subject to a task of proprioception, the elderly show increased cocontraction of agonist-antagonist muscles, perhaps to increase gamma drive and spindle sensitivity. It is believed to be used ...
Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [1]
The researchers used RNA sequencing and brain-mapping tools to analyze more than 1.2 million brain cells from young mice (2 months old) and older mice (18 months old).
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Camptocormia, also known as bent spine syndrome (BSS), is a symptom of a multitude of diseases that is most commonly seen in the elderly. It is identified by an abnormal thoracolumbar spinal flexion, which is a forward bending of the lower joints of the spine, occurring in a standing position.
These various changes have attempted to be mapped by conceptual models like the Scaffolding Theory of Aging and Cognition (STAC) in 2009. The STAC model looks at factors like neural changes to the white matter, dopamine depletion, shrinkage, and cortical thinning. [5] CT scans have found that the cerebral ventricles expand as a function of age.