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Particularly, damage to hippocampal CA1 cells adversely affects memory formation, [3] and this disruption has been linked to dose-dependent levels of alcohol consumption. [4] At higher doses, alcohol significantly inhibits neuronal activity in both the CA1 and CA3 pyramidal cell layers of the hippocampus.
Damage to any part of this system, including the hippocampus and surrounding cortices, results in amnesic syndromes. [1] This is why after a stroke people have a chance of developing cognitive deficits that result in anterograde amnesia, since strokes can involve the temporal lobe in the temporal cortex, and the temporal cortex houses the ...
Alcohol-related brain damage [1] [2] alters both the structure and function of the brain as a result of the direct neurotoxic effects of alcohol intoxication or acute alcohol withdrawal. Increased alcohol intake is associated with damage to brain regions including the frontal lobe , [ 3 ] limbic system , and cerebellum , [ 4 ] with widespread ...
In Alzheimer's disease (and other forms of dementia), the hippocampus is one of the first regions of the brain to suffer damage; short-term memory loss and disorientation are included among the early symptoms. Damage to the hippocampus can also result from oxygen starvation , encephalitis, or medial temporal lobe epilepsy.
Clive Wearing (born 11 May 1938) is a British former musicologist, conductor, tenor and pianist who developed chronic anterograde and retrograde amnesia in 1985. Since then, he has lacked the ability to form new memories and cannot recall aspects of his memories, frequently believing that he has only recently awoken from a comatose state.
The long-term impact of alcohol on the brain has become a growing area of research focus. While researchers have found that moderate alcohol consumption in older adults is associated with better cognition and well-being than abstinence, [1] excessive alcohol consumption is associated with widespread and significant brain lesions.
Brain ischemia has been linked to a variety of diseases or abnormalities. Individuals with sickle cell anemia, compressed blood vessels, ventricular tachycardia, plaque buildup in the arteries, blood clots, extremely low blood pressure as a result of heart attack, and congenital heart defects have a higher predisposition to brain ischemia in comparison to the average population.
Studies on specific cases demonstrate how particular impaired areas of the hippocampus are associated with the severity of RA. Damage can be limited to the CA1 field of the hippocampus, causing very limited RA for about one to two years. [13] More extensive damage limited to the hippocampus causes temporally graded amnesia for 15 to 25 years. [13]