Discover the vestibular system, your biological gyroscope! Learn how it detects movement and gravity to stabilize your gaze and posture.
Published on October 30, 2025
The vestibular system is the internal sensor of movement and gravity in humans. Nestled in the inner ear, it serves as a biological gyroscope: it detects every head tilt, every linear or rotational acceleration, then triggers reflexes that stabilize gaze, adjust postural tone, and inform the brain about the body's orientation.
| Sensors | Anatomy | Detected stimulus | Key function |
|---|---|---|---|
| Semicircular canals | Three perpendicular tubes filled with endolymph, ending with the ampullary crista | Angular accelerations (rotations) | Trigger the vestibulo-ocular reflex (VOR) |
| Otoliths (utricle & saccule) | Maculae covered with otoconia (calcium carbonate crystals) | Linear accelerations and position relative to gravity | Regulate the tone of extensors and the perception of verticality |
The vestibular system is the key organ for oculo-postural stability: without it, looking up, turning your head, or simply standing would become a constant challenge.
Learn about the latency of the vestibulo-ocular reflex (VOR) and its crucial role in compensating for head movements. Stay informed about the standards and implications of abnormal latency!
Discover how to test the vestibular function! Combine clinical and instrumental tests for accurate assessment. Learn about the methods and their interpretation.
Discover how the often-underestimated vestibule influences our posture and muscle tone. A quick connection between perception and movement essential for our balance!
