PSYC 311 Chapter Notes - Chapter 9: Paralimbic Cortex, Muteness, A New Brain
27 Dec 2016
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A new brain region for coordinating speech articulation. Apraxia of speech: patients are impaired in their ability to coordinate speech movement due to a disorder in programming the speech musculature, however their ability to perceive speech sounds, including their own errors, is unaffected. Patients with speech apraxia have difficulty producing the correct sounds of words in the proper sequence with the appropriate timing patients make inconsistent articulatory errors approximating the target word, have disrupted prosody and rate of speech. Apraxia of speech is not considered to be a perceptual problem, since patients exhibit articulatory deficits in the absence of any difficulty in perceiving or recognizing speech sounds. For instance, they can recognize their own articulatory errors. Via computer reconstructions and overlapping of focal brain lesions, the research team was able to determine the extent to which all patients in the study with apraxia of speech share a common lesion site.
