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Characterizing functional connectivity patterns during saliva swallows in different head positions.

Iva Jestrović1, James L Coyle2, Ervin Sejdić3

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The chin tuck maneuver, used to aid swallowing, alters brain networks involved in swallowing control. Specifically, head position impacts brain activity in the Alpha and Gamma frequency bands during swallowing.

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Area of Science:

  • Neuroscience
  • Swallowing physiology
  • Biomedical engineering

Background:

  • The chin tuck maneuver is recognized for enhancing airway protection in individuals with dysphagia.
  • Existing research establishes the chin tuck's efficacy but lacks clarity on its effects on brain activity during swallowing.

Purpose of the Study:

  • To investigate how the chin tuck maneuver influences brain network activity during swallowing.
  • To determine if head position affects neural control of swallowing.

Main Methods:

  • Electroencephalography (EEG) signals were recorded from 55 healthy adults during swallowing in neutral and chin-tuck positions.
  • Time-frequency synchrony measures were employed to construct brain networks.
  • Small-world properties and network differences between head positions were analyzed.

Main Results:

  • Brain networks associated with swallowing demonstrated small-world properties in both neutral and chin-tuck positions.
  • The chin-tuck position significantly modulated brain network activity within the Alpha and Gamma frequency bands.
  • Differences in brain network organization were observed based on head position during swallowing.

Conclusions:

  • Head position is a critical parameter to consider in future EEG studies of swallowing.
  • The findings suggest that the chin tuck maneuver has a measurable impact on the neural control of swallowing.