The role of connected speech in distinguishing types of apraxia of speech following brain damage

Authors

  • Chris Code University of Exeter
  • Jeremy Tree Swansea University
  • Nicole Müller University College Cork

DOI:

https://doi.org/10.1558/jcs.31105

Keywords:

apraxia of speech, stroke induced apraxia of speech, progressive apraxia of speech, connected speech, language recovery, language dissolution

Abstract

Apraxia of speech (AOS) is a common condition resulting from brain damage causing impairments to speech planning and programming that is distinct from aphasia and dysarthria. Following a stroke, AOS is most often seen as a part of nonfluent Broca’s aphasia. Recovery and dissolution of speech in stroke induced apraxia of speech (sAOS) and progressive AOS (pAOS) appear on a symptomatic level to be reversals of each other, but the existing evidence shows that sAOS is distinct from pAOS. This suggests different causes that have relevance for management of pAOS.

In this article, we examine the similarities and differences between sAOS and pAOS and conclude that while the two conditions present similarly, certain features differ significantly, which may suggest different mechanisms underlying their manifestation. The role of connected speech as opposed to single word utterances is noted.

Author Biographies

  • Chris Code, University of Exeter

    Chris Code is Professorial Research Fellow in the School of Psychology, Washington Singer Labs, University of Exeter, England. He is the Foundation Professor of Communication Sciences and Disorders at the University of Sydney, past Research Manager for Speakability, and Speakability’s National Adviser on Aphasia. He is past Patron of Aphasia Now. He is also co-founding editor of the journal Aphasiology. His research interests include the cognitive neuroscience of language and speech, psychosocial consequences of aphasia, recovery and treatment of aphasia, number processing, and apraxia. He is also interested in the contribution of speech and language impairments to the evolution of speech and language theory. He is a Fellow of the British Psychological Society (FBPsS) and the Royal College of Speech and Language Therapists (FRCSLT).

  • Jeremy Tree, Swansea University

    Jeremy Tree has a long-standing interest in the consequences of brain damage on specific cognitive functions (cognitive neuropsychology) – in particular, disorders of reading (dyslexia), speech production (aphasia), memory (amnesia), and face processing (prosopagnosia). In each case his work seeks to better illuminate the processing components of these specific functions in the normal population. He is co-director of the Psychology Dementia Research Group and co-founder of the Face Research Swansea (FaReS) lab. He is a Registered Chartered Psychologist (C. Psychol.), Fellow of the British Psychological Society (FBPsS), member of the Health Professionals Council, and Fellow of the Higher Education Academy (HEA).

  • Nicole Müller, University College Cork

    Nicole Müller is Professor of Speech and Hearing Sciences at University College Cork, Ireland. She also holds a visiting professorship at Linköping University, Sweden. In the past, she has held academic appointments in England, Wales, the USA, and Sweden. Her research interests are in clinical linguistics and phonetics, multilingualism, and adult-acquired impairments of communication and cognition, for example in consequence to neurodegeneration, brain injury, or stroke. She is a legacy editor of the journal Clinical Linguistics and Phonetics.

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Published

2024-10-21

How to Cite

Code, C., Tree, J., & Müller, N. (2024). The role of connected speech in distinguishing types of apraxia of speech following brain damage. Journal of Connected Speech. https://doi.org/10.1558/jcs.31105