Journal article
Time-frequency analysis of the EEG mu rhythm as a measure of sensorimotor integration in the later stages of swallowing
Clinical neurophysiology, Vol.127(7), pp.2625-2635
07/01/2016
PMID: 27291882
Abstract
Objective: Electroencephalography (EEG) was used to map the temporal dynamics of sensorimotor integration relative to the strength and timing of muscular activity during swallowing.
Methods: 64-channel EEG data and surface electromyographic (sEMG) data were recorded from 25 neurologically-healthy adults during swallowing and tongue-tapping. Events were demarcated so that sensorimotor activity primarily from the pharyngeal and esophageal phases of swallowing could be compared to activity resulting from tongue tapping.
Results: Independent component analysis identified bilateral clusters of sensorimotor mu components localized to the premotor and primary motor cortices as well as an infrahyoid myogenic cluster. Subsequent event-related spectral perturbations (ERSP) analyses showed event-related desynchronization (ERD) in the spectral power in the alpha (8-13 Hz) and beta (15-25 Hz) frequency bands of the mu clusters in both tasks. Mu ERD was stronger during swallowing when compared to tongue tapping (pFDR < .05) and the differences in sensorimotor processing between conditions was greater in the right hemisphere than the left, suggesting stronger right hemisphere lateralization for swallowing than tongue-tapping.
Conclusion: Mu activity was interpreted as representing a normal feed forward and feedback driven sensorimotor loop during the later stages of swallowing.
Significance: Results support further use of this novel neuroimaging technique to concurrently map neural and muscle activity during swallowing in clinical populations using EEG. (C) 2016 International Federation of Clinical Neurophysiology.
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Details
- Title
- Time-frequency analysis of the EEG mu rhythm as a measure of sensorimotor integration in the later stages of swallowing
- Creators
- M. Cuellar (Author) - Midwestern Univ, Speech Language Pathol Program, 555 31st St, Downers Grove, IL 60515 USAAshley Harkrider (Author) - Univ Tennessee, Hlth Sci Ctr, Dept Audiol & Speech Pathol, Knoxville, TN USADavid Jenson (Author)David Thornton (Author) - Univ Tennessee, Hlth Sci Ctr, Dept Audiol & Speech Pathol, Knoxville, TN USAAndrew L. Bowers (Author) - Univ Arkansas, Dept Commun Disorders, Fayetteville, AR 72701 USATim Saltuklaroglu (Author) - Univ Tennessee, Hlth Sci Ctr, Dept Audiol & Speech Pathol, Knoxville, TN USA
- Publication Details
- Clinical neurophysiology, Vol.127(7), pp.2625-2635
- Academic Unit
- Speech and Hearing Sciences, Department of
- Publisher
- Elsevier
- Identifiers
- 99901007440101842
- Language
- English
- Resource Type
- Journal article