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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 ...
However some data suggest that mild changes in orientation may be a normal part of aging. [52] [53] For example, Sweet and colleagues concluded that "older persons with normal, healthy memory may have mild orientation difficulties. In contrast, younger people with normal memory have virtually no orientation problems" [53] (p. 505). So although ...
The hippocampus (pl.: hippocampi; via Latin from Greek ἱππόκαμπος, 'seahorse') is a major component of the brain of humans and other vertebrates.The hippocampus is part of the limbic system, and plays important roles in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation.
The numbers of neurons born in the human adult hippocampus remains controversial; some studies have reported that in adult humans about 700 new neurons are added in the hippocampus every day, [14] while more recent studies show that adult hippocampal neurogenesis does not exist in humans, or, if it does, it is at undetectable levels. [15]
The hippocampus' right side is more oriented towards responding to spatial aspects, whereas the left side is associated with other context information. Also, there is evidence that experience in building extensive mental maps, such as driving a city taxi for a long time (since this requires considerable memorization of routes), can increase the ...
People also may not remember where their home is or the loved ones who take care of them, Dr. Kobylarz says. “You can see [the person with dementia] change at a certain time of the day and ...
The observed changes were larger in the initial learning phase than during continued training. Whereas the former two studies involved students in their early twenties, the experiments were recently repeated with an elderly cohort, revealing the same kind of structural changes, although attenuated by lower juggling performance of this group. [22]
The researchers discovered that people who had high fluctuations in their cholesterol levels had a 60 percent higher risk of developing dementia and a 23 percent greater risk of cognitive decline.