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Transcortical Motor Aphasia (TMA or TMoA) is a type of aphasia that is similar to Broca’s aphasia. TMA is due to stroke or brain injury that impacts, but does not directly affect, Broca’s area. Broca’s area is the area of the brain responsible for language production.
Transcortical motor aphasia (TMoA), also known as commissural dysphasia or white matter dysphasia, results from damage in the anterior superior frontal lobe of the language-dominant hemisphere. This damage is typically due to cerebrovascular accident (CVA).
Transcortical motor aphasia is a type of language disorder that can be present following a stroke or other neurological injury. Transcortical motor aphasia makes it difficult to speak or understand others, creating a barrier in communication for those affected.
Transcortical Motor Aphasia is a rare syndrome characterized by a small subcortical lesion in the frontal lobe, superior to Broca's area, or outside of the anterior language areas of the left hemisphere.
Transcortical motor aphasia. Transcortical sensory aphasia. Wernicke’s aphasia (receptive aphasia). How common is it? In the United States, an estimated 180,000 people are diagnosed with aphasia each year.
Transcortical Motor Aphasia In transcortical motor aphasia, the lesion is located around the Broca area while sparing and isolating it. Patients exhibit nonfluent speech but can repeat long, complex phrases, often displaying echolalia and perseveration.
What is transcortical motor aphasia? Transcortical motor aphasia is also known as “commissural” or “white matter” dysphasia. The damage occurs in the front portion of the frontal lobe on the left side of the brain.
Transcortical Motor Aphasia, also known as commissural dysphasia or white matter dysphasia, results from damage to the language-dominant hemisphere in the anterior superior frontal lobe. Transcortical Motor Aphasia is classified as a non-fluent aphasia characterized by a significantly reduced speech output but good auditory comprehension.
Transcortical motor aphasia is a subtype of nonfluent aphasia in which repetition is preserved relative to impaired verbal output. Expressive language is effortful and halting, with disrupted prosody, paraphasic errors, and perseveration.
The defining symptoms of transcortical motor aphasia (TCMA) are nonfluent verbal output with relatively preserved repetition. Other symptoms, such as naming difficulties, agrammatic output, or even some paraphasias, may occur, but these are not cardinal symptoms defining TCMA and are not necessary for the diagnosis.