Dynamic aphasia refers to an aphasia characterized by difficulty initiating speech output, ascribed to executive dysfunction. There is a reduction in spontaneous speech, but on formal testing no paraphasias, minimal anomia, preserved repetition and automatic speech. "Incorporational echolalia", when the patient uses the examiner’s question to help form an answer, may be observed. Dynamic aphasia may be conceptualized as a variant of transcortical motor aphasia, and may be seen with lesions of dorsolateral prefrontal cortex ("frontal aphasia").
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Cross ReferencesEcholalia; Transcortical aphasias