vestibulaarfunktsiooni

Vestibulaarfunktsioon refers to the sense of balance and spatial orientation, primarily mediated by the vestibular system in the inner ear. This system, consisting of the semicircular canals and otolith organs (utricle and saccule), detects head movements and position relative to gravity. The semicircular canals are sensitive to rotational acceleration, while the otolith organs detect linear acceleration and the pull of gravity.

Information from the vestibular system is transmitted to the brain via the vestibular nerve. The brain then integrates this sensory input with visual and proprioceptive information to maintain balance, stabilize gaze during head movements (vestibulo-ocular reflex or VOR), and contribute to posture. A healthy vestibulaarfunktsioon is crucial for everyday activities such as walking, standing, and performing complex motor tasks.

Dysfunction of the vestibular system can lead to a variety of symptoms, including vertigo (a sensation of spinning), dizziness, unsteadiness, imbalance, and nausea. These symptoms can significantly impact an individual's quality of life and ability to function. Causes of vestibular dysfunction are diverse and can include inner ear infections, Meniere's disease, benign paroxysmal positional vertigo (BPPV), vestibular neuritis, aging, head trauma, and certain medications. Assessment of vestibulaarfunktsioon involves various clinical tests designed to evaluate the function of different components of the vestibular system.