101. Decreased Distance between Representation Sites of Distinct Facial Movements in Facial Synkinesis—A Task fMRI Study.
- Author
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Wang, Yin, Yang, Liqin, Wang, Wei-wei, Ding, Wei, and Liu, Han-qiu
- Subjects
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SMILING , *FUNCTIONAL magnetic resonance imaging , *FACIAL paralysis , *SENSORIMOTOR cortex , *FACIAL nerve , *MAGNETIC resonance imaging - Abstract
Highlights • Facial nerve lesions could induce plastic changes in sensorimotor cortex. • Distances between blinking and smiling representation sites (B-S-distance) were shorter in patients than in controls. • B-S-distance on affected sides was shorter than unaffected sides in patients. Abstract This study aimed to investigate the cortical functional alterations in patients with unilateral facial synkinesis using the task-designed functional magnetic resonance imaging. Fourteen unilateral synkinesis followed by peripheral facial nerve palsy patients and eighteen healthy adults were recruited in this study. Four facial motor tasks, i.e. left/right blinking and left/right smiling, were performed by each subject during the scans. Based on the activation maps, the spatial distance between the representation sites in the contralateral pre-/post-central gyrus of left or right blinking and smiling tasks (i.e. left/right B-S-distance) were calculated. Patients with unilateral facial synkinesis showed decreased B-S-distances during blinking and smiling tasks on the affected half face (9.68 ± 3.92 mm) compared to both average distances in healthy controls (14.95 ± 5.55 mm; p = 0.002) and unaffected half face tasks in patients (16.19 ± 7.87 mm; p = 0.011). These findings demonstrated cortical reorganization in facial synkinesis and suggested a conceivable mechanism corresponding to the simultaneous facial movement. This potentially provides a new modulation target for preventive, therapeutic and rehabilitative maneuver of this disease. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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