Related Experiment Video
Updated: Jun 1, 2026
19:53
Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
Cortical reorganization in Bell's palsy.
Carsten M Klingner1, Gerd F Volk, Antje Maertin
1Hans Berger Clinic of Neurology, University Hospital Jena, Germany Brain Imaging Center, University Hospital Jena, Germany. carsten.klingner@med.uni-jena.de
Restorative Neurology and Neuroscience
|May 19, 2011
Summary
Bell's palsy, a temporary facial nerve disorder, causes brain reorganization. Functional MRI reveals lasting changes in motor control and connectivity even after recovery.
Area of Science:
- Neuroscience
- Neurology
- Medical Imaging
Background:
- Bell's palsy is a common idiopathic unilateral facial nerve palsy.
- It typically results in good functional recovery.
Purpose of the Study:
- To investigate brain functional reorganization due to transiently decreased motor control in Bell's palsy.
- To assess the impact without deafferentation.
Main Methods:
- Functional MRI (fMRI) used on 10 patients in acute and recovery stages.
- Paradigm involved unilateral facial movements (affected and non-affected sides).
Main Results:
- Acute stage: Overactivity in contralateral brain areas (error detection, sensory-motor integration).
- Follow-up: Overactivity in motor integration and control areas.
- Disrupted functional connectivity in the affected cortical motor system during the acute stage, primarily between contralateral motor areas.
Conclusions:
- Transient peripheral deafferentation from Bell's palsy induces functional brain reorganization.
- These changes persist even after complete clinical recovery.
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