Related Experiment Video
Updated: Jul 17, 2025
07:22
Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
562
Swallow-related Brain Activity in Post-total Laryngectomy Patients: A Case Series Study
Akari Ogawa1,2, Satoko Koganemaru2,3, Toshimitsu Takahashi3
1Cognitive Motor Neuroscience, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Progress in Rehabilitation Medicine
|September 4, 2023
Summary
Total laryngectomy impairs swallowing, but the brain
Area of Science:
- Neuroscience
- Otolaryngology
- Swallowing Disorders
Background:
- Total laryngectomy for laryngeal cancer disrupts normal swallowing function.
- Compensatory tongue movements are used to propel food bolus.
- Neurophysiological mechanisms of post-laryngectomy swallowing are not well understood.
Observation:
- Investigated event-related desynchronization (ERD) during swallowing in three post-total laryngectomy patients using electroencephalography.
- Observed compensatory tongue movements in all patients.
- Identified significant ERD in specific brain regions for each patient.
Findings:
- Event-related desynchronization (ERD) during swallowing was observed in post-total laryngectomy patients.
- ERD patterns varied across individuals, localizing to different sensorimotor and frontal/temporal/parietal areas.
- This suggests altered cortical activation related to swallowing.
Implications:
- Cortical activity may reflect brain reorganization to adapt swallowing function after total laryngectomy.
- Findings contribute to understanding neurophysiological changes in post-surgical dysphagia.
- Highlights the potential for neuroimaging to study compensatory mechanisms in swallowing.
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