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It is suspected that an atypical form of Alzheimer's disease is the most common cause of logopenic progressive aphasia. [ 3 ] [ 4 ] Although patients with the logopenic variant of PPA are still able to produce speech, their speech rate may be significantly slowed due to word retrieval difficulty. [ 4 ]
Aphasia, also known as dysphasia, [a] is an impairment in a person’s ability to comprehend or formulate language because of damage to specific brain regions. [2] The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in the Global North. [3]
Alzheimer's disease is related to semantic dementia, which both have similar symptoms. The main difference between the two being that Alzheimer's is categorized by atrophy to both sides of the brain while semantic dementia is categorized by loss of brain tissue in the front portion of the left temporal lobe. [ 16 ]
"Prediction of Alzheimer's disease progression within 6 years using speech: A novel approach leveraging language models." Alzheimer's and Dementia . Dr. Rhoda Au, Ph.D.
Anomic aphasia, also known as dysnomia, nominal aphasia, and amnesic aphasia, is a mild, fluent type of aphasia where individuals have word retrieval failures and cannot express the words they want to say (particularly nouns and verbs). [1]
Speech is vague, conveys little information, but is not grossly incoherent and the amount of speech is not reduced. "I often contemplate—it is a general stance of the world—it is a tendency which varies from time to time—it defines things more than others—it is in the nature of habit—this is what I would like to say to explain ...
Researchers have developed an AI tool that can predict with nearly 80% accuracy whether someone is at risk for developing Alzheimer’s disease based on their speech patterns.
It is less severe than logorrhea and may be associated with the middle stage in dementia. [1] It is, however, more severe than circumstantial speech, in which the speaker wanders but eventually returns to the topic. [3] Some adults with right hemisphere brain damage may exhibit behavior that includes tangential speech. [4]