Acquired Apraxia of Speech (AOS) is a motor speech disorder in adults that arises from neurological injury, typically to the language-dominant (left) hemisphere. Unlike CAS in children, acquired AOS represents a loss or disruption of previously intact speech abilities due to brain damage. The disorder is not due to muscle weakness or paralysis; rather, it reflects a breakdown in the brain’s ability to send correct movement instructions to the speech muscles.
Wambaugh, J. L., Duffy, J. R., McNeil, M. R., Robin, D. A., & Rogers, M. A. (2006). Treatment guidelines for acquired apraxia of speech: A synthesis and evaluation of the evidence. Journal of Medical Speech-Language Pathology, 14(2), xv–xxxiii. (Treatment guidelines for acquired apraxia of speech: A synthesis and ...)
