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Swallowing Lateralization: The Effects of Modified Dual-Task Interference |
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| Authors: | Stephanie K. Daniels PhD David M. Corey PhD April Fraychinaud MCD Asha DePolo MCD Anne L. Foundas MD |
| Affiliation: | (1) Research Service, Department of Veterans Affairs Medical Center, New Orleans, Louisiana, USA;(2) Neurology Service, Department of Veterans Affairs Medical Center, New Orleans, Louisiana, USA;(3) Department of Psychiatry and Neurology, Tulane University Health Sciences Center, New Orleans, Louisiana, USA;(4) Department of Psychology, Tulane University, New Orleans, Louisiana, USA;(5) Research Service, VA Medical Centre, 1601 Perdido Street, New Orleans, LA 70112-1262, USA |
| Abstract: | A modified dual-task paradigm was designed to learn whether swallowing functions are selectively mediated by the left or right hemisphere. Healthy right-handed men (N = 38) were studied using videofluoroscopy to examine continuous straw drinking at baseline and with three interference conditions (silent word repetition, line orientation, finger tapping). Results indicate that activation of both right and left hemispheres can interfere with some swallowing behaviors. Findings suggest possibly different roles of the two hemispheres in the mediation of swallowing and support the notion that specific components of swallowing may be preferentially mediated by the left versus the right hemisphere. |
| Keywords: | Deglutition Lateralization Dual task paradigm Deglutition disorders |
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