vestibulospinal tract

The vestibulospinal tract is a descending pathway in the spinal cord that originates from the lateral vestibular nucleus in the brainstem. Fibers of this tract travel down the spinal cord without crossing and influence motor neurons that control muscle tone, particularly in extensor muscles.1

This tract plays a role in maintaining equilibrium and posture by mediating the influence of the inner ear and the cerebellum on muscle activity. Smaller vestibular projections also affect motor neurons in the cervical region of the spinal cord, influencing head and neck movements. The vestibulospinal tract is part of a larger system that helps the body adjust to acceleration forces and maintain balance.12