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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]
Conduction aphasia is another speech disorder that is similar to, but not the same as, apraxia of speech. Although patients with conduction aphasia have full comprehension of speech, as do those with AOS, there are differences between the two disorders. [18] Patients with conduction aphasia are typically able to speak fluently, but they do not ...
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]
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 ...
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 .
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.
Mixed transcortical aphasia is characterized by severe speaking and comprehension impairment, but with preserved repetition. [6] People who suffer mixed transcortical aphasia struggle greatly to produce propositional language or to understand what is being said to them, yet they can repeat long, complex utterances or finish a song once they hear the first part.
Studies have found that bromocriptine increased neural networks which assist with the initiation of speech in individuals who possess non-fluent characteristics of speech. [ 20 ] In order to capitalize on neuroplasticity for treatment of all types of aphasia, timing, intensity, duration, and repetition of treatment should be taken into ...