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Functional Imaging with Reinforcement, Eyetracking, and Physiological Monitoring
Published on: November 13, 2008
Swallowing Preparation and Execution: Insights from a Delayed-Response Functional Magnetic Resonance Imaging (fMRI)
Jillian A Toogood1, Rebecca C Smith1, Todd K Stevens2
1Western University, London, ON, N6A 5B9, Canada.
Dysphagia
|April 1, 2017
Summary
This study reveals distinct brain region roles in swallowing. Swallowing preparation activates areas like the anterior cingulate cortex more than execution, while the insula is more involved in execution.
Area of Science:
- Neuroscience
- Swallowing physiology
- Brain imaging
Background:
- The neural control of swallowing involves complex brain networks.
- Understanding the specific roles of sub-regions in swallowing preparation and execution is crucial.
Purpose of the Study:
- To elucidate the functional contributions of swallowing neural network sub-regions during preparation and motor execution.
- To differentiate brain activation patterns between swallowing preparation and execution.
Main Methods:
- Functional magnetic resonance imaging (fMRI) study with healthy volunteers.
- Delayed-response, go, no-go tasks involving swallowing preparation and execution.
- Analysis of brain activation differences between four distinct tasks.
Main Results:
- Greater activation during preparation in anterior cingulate cortex, premotor cortex, pericentral cortex, thalamus, caudate, and putamen.
- Greater activation during execution in the insula and left dorsolateral pericentral cortex.
- Overlap in activation for both preparation and execution in inferior ventrolateral pericentral areas and supplementary motor area.
Conclusions:
- Swallowing preparation and execution are mediated by a cascading pattern of activity within the swallowing neural network.
- Distinct sub-regions contribute differentially to the preparation and execution phases of swallowing.
Keywords:
Brain imagingCerebral cortexDeglutitionDeglutition disordersExecutionHumanNeural controlPreparationfMRI
