Vestibulo-ocular reflex
Vestibulo-ocular reflex
Vestibulo-ocular reflex (VOR) /ˌvɛstɪˈbjuːloʊˈɒkjʊlər ˈriːflɛks/ is a neurological mechanism that stabilizes gaze during head movement, by producing an eye movement in the direction opposite to head movement. This reflex action is a result of the coordination between the vestibular system and the ocular motor system.
Etymology
The term "vestibulo-ocular reflex" is derived from the Latin words "vestibulum" meaning entrance, and "ocular" meaning eye. The term "reflex" is derived from the Latin word "reflexus" meaning to bend back. This term accurately describes the function of the VOR, which is to counteract the motion of the head and maintain stable gaze.
Function
The primary function of the Vestibulo-ocular reflex is to maintain visual stability during rapid head movement. This is achieved by moving the eyes in the opposite direction to the head movement at the same speed. This reflex allows for clear vision even when the head is moving rapidly, such as during walking or running.
Related Terms
- Vestibular system: The sensory system that contributes to balance and sense of spatial orientation.
- Ocular motor system: The system that controls the movement of the eyes.
- Gaze: The act of looking steadily and intently at something.
- Reflex: An action that is performed without conscious thought as a response to a stimulus.
See Also
External links
- Medical encyclopedia article on Vestibulo-ocular reflex
- Wikipedia's article - Vestibulo-ocular reflex
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