Tutorials in Motor Neuroscience pp 547-561 | Cite as
Current Views on the Mechanisms of Eye-Head Coordination
Abstract
Considerable evidence has now accumulated suggesting that the eye movement control system, which to date has been almost exclusively studied in animals whose heads are restrained, is but a special case of a more general gaze control system that controls displacements of the visual axis when the head is unrestrained. The gaze control system was viewed, originally, as being oculocentric in nature: i.e., the trajectory of the visual axis in space was thought to be independent of head motion. A mechanism was proposed whereby the head’s contribution to a gaze shift could be subtracted out by the action of the vestibulo-ocular reflex. This view has been considerably modified in recent years and the gaze control system has now become an elegant example of how the brain controls and coordinates two independently moving body segments.
Keywords
Head Movement Superior Colliculus Semicircular Canal Saccade Amplitude Efference CopyPreview
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References
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