ERIC Number: EJ1147886
Record Type: Journal
Publication Date: 2017-Jun
Abstractor: As Provided
Speech Motor Sequence Learning: Acquisition and Retention in Parkinson Disease and Normal Aging
Whitfield, Jason A.; Goberman, Alexander M.
Journal of Speech, Language, and Hearing Research, v60 n6 p1477-1492 Jun 2017
Purpose: The aim of the current investigation was to examine speech motor sequence learning in neurologically healthy younger adults, neurologically healthy older adults, and individuals with Parkinson disease (PD) over a 2-day period. Method: A sequential nonword repetition task was used to examine learning over 2 days. Participants practiced a sequence of 6 monosyllabic nonwords that was retested following nighttime sleep. The speed and accuracy of the nonword sequence were measured, and learning was inferred by examining performance within and between sessions. Results: Though all groups exhibited comparable improvements of the nonword sequence performance during the initial session, between-session retention of the nonword sequence differed between groups. Younger adult controls exhibited offline gains, characterized by an increase in the speed and accuracy of nonword sequence performance across sessions, whereas older adults exhibited stable between-session performance. Individuals with PD exhibited offline losses, marked by an increase in sequence duration between sessions. Conclusions: The current results demonstrate that both PD and normal aging affect retention of speech motor learning. Furthermore, these data suggest that basal ganglia dysfunction associated with PD may affect the later stages of speech motor learning. Findings from the current investigation are discussed in relation to studies examining consolidation of nonspeech motor learning.
Descriptors: Young Adults, Older Adults, Neurological Impairments, Comparative Analysis, Repetition, Accuracy, Performance, Retention (Psychology), Age Differences, Aging (Individuals), Psychomotor Skills, Speech Communication, Reaction Time
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A