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Expressive aphasia (also known as Broca's aphasia) is a type of aphasia characterized by partial loss of the ability to produce language (spoken, manual, [1] or written), although comprehension generally remains intact. [2] A person with expressive aphasia will exhibit effortful speech.
As non-fluent aphasia is usually caused by lesions in patients’ left hemisphere, the undamaged right hemisphere is regarded by researchers as the reason why patients preserve their ability to sing (Jeffries et al., 2003). Patients who undergo brain imaging scan also show an increased right hemispheric activity when they are singing than speaking.
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 developed countries. [3]
Transcortical sensory aphasia: individuals have impaired auditory comprehension with intact repetition and fluent speech. [16] Progressive confluent aphasia: A form of frontotemporal dementia characterized by motor speech impairment, agrammatism, laborious speech, and apraxia of speech. It is understood that comprehension of speech and semantic ...
Primary progressive aphasia is a rare disorder where people slowly lose their ability to talk, read, write, and comprehend what they hear in conversation over a period of time. It was first described as a distinct syndrome by Mesulam in 1982. [ 5 ]
Conduction aphasia, also called associative aphasia, is an uncommon form of aphasia caused by damage to the parietal lobe of the brain. An acquired language disorder, it is characterized by intact auditory comprehension, coherent (yet paraphasic) speech production, but poor speech repetition. Affected people are fully capable of understanding ...
[19] [12] Aphasia is a disorder that is acquired, therefore it occurs in individuals that have already developed language. Aphasia does not affect a person's intellect or speech but Instead affects the formulation of language. [20] All areas of language are affected by aphasia including expressive and receptive language abilities. [20]
Transcortical sensory aphasia is characterized as a fluent aphasia. Fluency is determined by direct qualitative observation of the patient’s speech to determine the length of spoken phrases, and is usually characterized by a normal or rapid rate; normal phrase length, rhythm, melody, and articulatory agility; and normal or paragrammatic speech. [5]
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