Examining speech motor planning difficulties in apraxia of speech and aphasia via the sequential production of phonetically similar words
| Autor: | Pélagie M. Beeson, Edwin Maas, Brad H. Story, Marja Liisa Mailend, Kenneth I. Forster |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Apraxias Cognitive Neuroscience Experimental and Cognitive Psychology Aphasiology Audiology Apraxia Speech Disorders Article 050105 experimental psychology Task (project management) 03 medical and health sciences 0302 clinical medicine Speech Production Measurement Arts and Humanities (miscellaneous) Phonetics Aphasia Reaction Time Developmental and Educational Psychology medicine Humans Speech 0501 psychology and cognitive sciences Control (linguistics) Aged Language production 05 social sciences Middle Aged medicine.disease Neuropsychology and Physiological Psychology Female Syllable medicine.symptom Psychology 030217 neurology & neurosurgery Utterance |
| Zdroj: | Cogn Neuropsychol |
| ISSN: | 1464-0627 0264-3294 |
| Popis: | This study investigated the underlying nature of apraxia of speech (AOS) by testing two competing hypotheses. The Reduced Buffer Capacity Hypothesis argues that people with AOS can plan speech only one syllable at a time Rogers and Storkel [1999. Planning speech one syllable at a time: The reduced buffer capacity hypothesis in apraxia of speech. Aphasiology, 13(9-11), 793-805. https://doi.org/10.1080/026870399401885]. The Program Retrieval Deficit Hypothesis states that selecting a motor programme is difficult in face of competition from other simultaneously activated programmes Mailend and Maas [2013. Speech motor programming in apraxia of speech: Evidence from a delayed picture-word interference task. American Journal of Speech-Language Pathology, 22(2), S380-S396. https://doi.org/10.1044/1058-0360(2013/12-0101)]. Speakers with AOS and aphasia, aphasia without AOS, and unimpaired controls were asked to prepare and hold a two-word utterance until a go-signal prompted a spoken response. Phonetic similarity between target words was manipulated. Speakers with AOS had longer reaction times in conditions with two similar words compared to two identical words. The Control and the Aphasia group did not show this effect. These results suggest that speakers with AOS need additional processing time to retrieve target words when multiple motor programmes are simultaneously activated. |
| Databáze: | OpenAIRE |
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