Vestibular Evaluation and Treatment
Vestibular Diagnosis and Treatment Components of Balance Visual Somatosensory Vestibular Vestibular System: Head motion and angular acceleration detected by the semicircular canals Posterior Canal Horizontal Canal Anterior Canal Head motion (acceleration) and head position (gravity) dependent on utricle and saccule Utricle: horizontal Saccule: vertical Inputs from vestibular organs, visual, proprioceptive and tactile inputs integrated in the central nervous system. Forebrain perceives orientation Spinal cord and cerebellum are responsible for postural control Ocular system controls eye movements At the base of each semicircular canal sits an ampula; within each ampula sits a cupula Cupula is gelatinous and has the same density as endolymph. The cupula is attached to hair cells which are polarized The cupula forms an impenetrable barrier between the ampula and the semicircular canals, so otocon...