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[Influence of mandibular somesthesia on cephalic deviation and spatial representations]
Philippe Decocq1, Emmanuelle Bocquet1
1Centre Abel Caumartin, Faculté de Chirurgie Dentaire, Sous-section ODF, Université de Lille, Place de Verdun, 59000 Lille, France.
L' Orthodontie Francaise
|November 4, 2020
Summary
Mandibular proprioception influences head posture and spatial orientation. Vibrating jaw muscles alters head position and subjective visual vertical, suggesting a global role in postural control.
Area of Science:
- Neuroscience
- Biomechanics
- Human Motor Control
Background:
- Mandibular proprioception plays a role in postural control and spatial orientation.
- Dysfunctions in posture and spatial awareness are linked to mandibular proprioception.
Purpose of the Study:
- To investigate the influence of mandibular proprioception on cephalic posture and spatial orientation.
- To clarify the role of mandibular proprioception in controlling head position and spatial references.
Main Methods:
- 24 subjects underwent vibration of the masseter and temporal muscles.
- Measurements included head position (HP), subjective visual vertical (SVV), and line bisection (LB) with and without vibration.
Main Results:
- Without vibration, head position was negatively correlated with subjective visual vertical.
- With vibration, head position errors and subjective visual vertical errors aligned.
- Vibration affected head position and subjective visual vertical, but not line bisection.
Conclusions:
- Mandibular proprioception influences cephalic posture and spatial orientation.
- Muscle vibration can elicit global and oriented responses beyond local effects.
- Findings suggest a significant role for mandibular proprioception in integrated sensory-motor control.
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