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The loss of dopamine with age is thought to be responsible for many neurological symptoms that increase in frequency with age, such as decreased arm swing and increased rigidity. [41] Changes in dopamine levels may also cause age-related changes in cognitive flexibility. [41]
The dopamine neurons of the dopaminergic pathways synthesize and release the neurotransmitter dopamine. [2] [3] Enzymes tyrosine hydroxylase and dopa decarboxylase are required for dopamine synthesis. [4] These enzymes are both produced in the cell bodies of dopamine neurons. Dopamine is stored in the cytoplasm and vesicles in axon terminals.
Loss of acetylcholine-producing neurons is thought to account for degeneration in memory and learning, while the death of dopamine-producing neurons appears to be responsible for degeneration of behavior, cognition, mood, movement, motivation, and sleep. [2]
Memory complaints do occur frequently as one gets get older, but saying 'I'm just getting older' could dismiss daily symptoms from an underlying disease. When memory changes are more than 'just ...
Age-related hearing loss in midlife is linked to cognitive impairment in late life, and is seen as a risk factor for the development of Alzheimer's disease and dementia. Such hearing loss may be caused by a central auditory processing disorder that makes the understanding of speech against background noise difficult. Age-related hearing loss is ...
Hundreds of thousands of older people are hospitalized due to falls, and now some health care providers are using VR to help prevent the accidents. Therapists use VR to help older adults recover ...
Normal aging movement control in humans is about the changes in the muscles, motor neurons, nerves, sensory functions, gait, fatigue, visual and manual responses, in men and women as they get older but who do not have neurological, muscular (atrophy, dystrophy...) or neuromuscular disorder. With aging, neuromuscular movements are impaired ...
The researchers estimate that the multivitamin intervention improved memory performance by the equivalent of 3.1 years compared tothe placebo. It’s the second large study to find a cognitive ...