Multidimensional Analysis of Head Stabilization—Progress and Prospects
Multidimensional Analysis of Head Stabilization—Progress and Prospects
The ultimate objective in studying the vestibulocollic (VCR) and cervicocollic (CCR) reflexes is to understand their dynamic and spatial properties at three levels: the kinetics of movement of the head, neck vertebrae, and neck muscles following perturbation of the body in any direction; the dynamics of activation of each class of receptor and each neck muscle; and spatial and dynamic properties of neuronal circuits that transform receptor input to muscle output. Current progress and future prospects for understanding each of these aspects are summarized. Three-dimensional power spectral characteristics of movements of the head-neck system have been measured during functional activities. Significant power was observed in the pitch and yaw planes, with the wider bandwidth for pitch occurring for walking in place.
Keywords: vestibulocollic reflexes, cervicocollic reflexes, reflexes, movements, neuronal circuits, picture activation
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