Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Apraxia of Speech

  • Julie L. WambaughEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_862


Historically, acquired apraxia of speech (AOS) has been known under a variety of terminological designations (e.g., aphemia, phonemic disintegration, cortical dysarthria, dyspraxia of speech). Currently, there are no acceptable synonyms in use. The descriptor, “stroke induced” (SI), has occasionally been used to specify AOS resulting from stroke (e.g., SI-AOS). Primary progressive apraxia of speech (PPAOS) is used to designate AOS associated with neurodegenerative disease.


AOS is a neurologic, motoric disorder of speech production that is characterized by slowed rate of speech, difficulties in sound production, and disrupted prosody. AOS is not a disorder of language, although it rarely occurs without aphasia. Consequently, there is no impairment of comprehension or production of language in pure AOS.


AOS currently does not have subcategories but is differentiated relative to onset and progression: PPAOS (primary progressive) or AOS/SI-AOS (sudden...

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References and Readings

  1. Ballard, K., Wambaugh, J., Duffy, J., Layfield, C., Maas, E., Mauszycki, S., & McNeil, M. (2015). Updated treatment guidelines for acquired apraxia of speech: A systematic review of intervention research between 2004 and 2012. American Journal of Speech-Language Pathology, 24, 316–337.  https://doi.org/10.1044/2015_AJSLP-14-0118.CrossRefPubMedGoogle Scholar
  2. Dabul, B. (2000). Apraxia battery for adults (2nd ed.). Austin: Pro-ed.Google Scholar
  3. Duffy, J. R. (2013). Motor speech disorders: Substrates, differential diagnosis, and management (3rd ed.). St. Louis: Elsevier Mosby.Google Scholar
  4. Marangolo, P., Marinelli, C. V., Bonifazi, S., Fiori, V., Ceravolo, M. G., Proviniali, L., & Tomaiuolo, F. (2011). Electrical stimulation over the left inferior frontal gyrus (IFG) determines long-term effects in the recovery of speech apraxia in three chronic aphasics. Behavioural Brain Research, 225(2), 498–504.PubMedCrossRefGoogle Scholar
  5. Marangolo, P., Fiori, V., Cipollari, S., Campana, S., Razzano, C., DiPaola, M., Koch, G., & Caltagirone, C. (2013). Bihemispheric stimulation over left and right inferior frontal region enhances recovery from apraxia of speech in chronic aphasia. European Journal of Neuroscience, 38(9), 3370–3377.PubMedCrossRefGoogle Scholar
  6. McNeil, M. (2002). Apraxia of speech: From concept to clinic. Seminars in Speech and Language, 23(4), 221–222.CrossRefGoogle Scholar
  7. McNeil, M. R., Odell, K. H., Miller, S. B., & Hunter, L. (1995). Consistency, variability, and target approximation for successive speech repetitions among apraxic, conduction aphasic, apraxic dysarthric speakers. Clinical Aphasiology, 23, 39–55.Google Scholar
  8. McNeil, M. R., Robin, D. A., & Schmidt, R. A. (2009). Apraxia of speech: Definition and differential diagnosis. In M. R. McNeil (Ed.), Clinical management of sensorimotor speech disorders (2nd ed., pp. 249–268). New York: Thieme.Google Scholar
  9. Staiger, A., Finger-Berg, W., Aichert, I., & Ziegler, W. (2012). Error variability in apraxia of speech: A matter of controversy. Journal of Speech, Language, and Hearing Research, 55, S1544–S1561.PubMedCrossRefGoogle Scholar
  10. Wambaugh, J. L., & Shuster, L. I. (2008). The nature and management of neuromotor speech disorders accompanying aphasia. In R. Chapey (Ed.), Language intervention strategies in aphasia and related neurogenic communication disorders (5th ed., pp. 1009–1042). Philadelphia: Lippincott Williams & Wilkins.Google Scholar
  11. Wambaugh, J. L., Duffy, J. R., McNeil, M. R., Robin, D. A., & Rogers, M. (2006a). Treatment guidelines for acquired apraxia of speech: A synthesis and evaluation of the evidence. Journal of Medical Speech Language Pathology, 14(2), xv–xxxiii.Google Scholar
  12. Wambaugh, J. L., Duffy, J. R., McNeil, M. R., Robin, D. A., & Rogers, M. (2006b). Treatment guidelines for acquired apraxia of speech: Treatment descriptions and recommendations. Journal of Medical Speech Language Pathology, 14(2), xxxv–ixvii.Google Scholar

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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Veterans Affairs Salt Lake City Healthcare SystemUniversity of UtahSalt Lake CityUSA