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Semantic dementia. In neurology, semantic dementia ( SD ), also known as semantic variant primary progressive aphasia ( svPPA ), is a progressive neurodegenerative disorder characterized by loss of semantic memory in both the verbal and non-verbal domains. However, the most common presenting symptoms are in the verbal domain (with loss of word ...
Semantic Scholar. Semantic Scholar is a research tool for scientific literature powered by artificial intelligence. It is developed at the Allen Institute for AI and was publicly released in November 2015. [ 2] Semantic Scholar uses modern techniques in natural language processing to support the research process, for example by providing ...
Dementia is a syndrome associated with many neurodegenerative diseases, characterized by a general decline in cognitive abilities that affects a person's ability to perform everyday activities. This typically involves problems with memory, thinking, behavior, and motor control. [ 10]
Powers stresses this, though: Struggling with word finding and speaking more slowly doesn’t mean you have dementia. “But in some people, it can be the first sign of dementia,” he says ...
Frontotemporal dementia is an early onset disorder that mostly occurs between the ages of 45 and 65, [ 13] but can begin earlier, and in 20–25% of cases onset is later. [ 11][ 14] Men and women appear to be equally affected. [ 15] It is the most common early presenting dementia. [ 16]
Semantic dementia is a semantic memory disorder that causes patients to lose the ability to match words or images to their meanings. [54] It is fairly rare for patients with semantic dementia to develop category specific impairments, though there have been documented cases of it occurring.
Mild cognitive impairment (MCI) is a condition in which people face memory problems more often than that of the average person their age. These symptoms, however, do not prevent them from carrying out normal activities and are not as severe as the symptoms for Alzheimer's disease (AD). Symptoms often include misplacing items, forgetting events ...
Exceptional memory. Exceptional memory is the ability to have accurate and detailed recall in a variety of ways, including hyperthymesia, eidetic memory, synesthesia, and emotional memory. Exceptional memory is also prevalent in those with savant syndrome and mnemonists .
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