Labyrinthine righting reflex
Encyclopedia
The labyrinthine righting reflex is a reflex
Reflex
A reflex action, also known as a reflex, is an involuntary and nearly instantaneous movement in response to a stimulus. A true reflex is a behavior which is mediated via the reflex arc; this does not apply to casual uses of the term 'reflex'.-See also:...

 that is initiated after the vestibular apparatus
Vestibular system
The vestibular system, which contributes to balance in most mammals and to the sense of spatial orientation, is the sensory system that provides the leading contribution about movement and sense of balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of...

has sensed that the body is not erect. The reflex acts to restore the body to the standing posture. The reflex is initiated by the head, wherein it moves back into position, and the rest of the body follows.
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