How does the cerebellum adjust the vestibulo-ocular reflex over time?

The cerebellum plays a critical role in the ongoing calibration of the vestibulo-ocular reflex (VOR) by acting as an error-detection system.1

When the VOR is underactive, the eyes fail to deviate sufficiently during head movement, causing the visual image to slip across the retina rather than remaining stationary. The cerebellum receives direct input from the vestibular apparatus as well as sensory information from visual and spinal systems, allowing it to compare the intended eye position with the actual movement achieved.1

Upon detecting a mismatch, the cerebellum utilizes inhibitory connections to the vestibular nuclei to adjust the VOR. This process ensures that subsequent acceleration signals trigger more appropriate eye movements. Through this continual updating, the VOR demonstrates significant plasticity, allowing it to adapt to changing conditions—such as the use of corrective lenses—to maintain clear vision throughout life.1