One consequence of these spontaneous action potentials is that the firing rates of vestibular fibers can increase or decrease in a manner that faithfully mimics the receptor potentials produced by the hair cells. Like the auditory system, the vestibular system is a membranous cavity filled with endolymph and suspended within the otic capsule by perilymph. The biphasic nature of the receptor potential means that some transduction channels are open in the absence of stimulation, with the result that hair cells tonically release transmitter, thereby generating considerable spontaneous activity in vestibular nerve fibers ( Box B). vestibular and auditory portion of the inner ear are attached to each other, share the same. The receptors for both are located in a convoluted chamber, the bony. The purpose of this work was to identify evidence of the presence or absence of such conjugation in the ontogeny of the auditory and vestibular systems. The vestibular and auditory senses are both part of the same organ the inner ear. Movement of the stereocilia in the direction away from the kinocilium closes the channels, hyperpolarizing the hair cell and thus reducing vestibular nerve activity. All of the above allowed us to assume the presence of an integrative system, specifically, the conjugate formation of the vestibular and auditory systems in ontogenesis. The auditory and vestibular pathways are anatomically related but discrete pathways that permit conscious perception Perception The process by which the nature and meaning of sensory stimuli are recognized and interpreted. The vestibular system is made up of a network of. One branch of this nerve, the auditory nerve, carries sound signals to the. The inner ear is composed of two parts: the cochlea for hearing and the vestibular system for balance. It utilizes hair cells just like the auditory system, but it excites them in different. As in the case of auditory hair cells, movement of the stereocilia toward the kinocilium in the vestibular end organs opens mechanically gated transduction channels located at the tips of the stereocilia, depolarizing the hair cell and causing neurotransmitter release onto (and excitation of) the vestibular nerve fibers. The cochlea and the vestibular system are connected to the brain by the 8th. The vestibular system has some similarities with the auditory system. Vestibular and auditory hair cells are quite similar a detailed description of hair cell structure and function has already been given in Chapter 13. The vestibular hair cells, which, like cochlear hair cells, transduce minute displacements into behaviorally relevant receptor potentials, provide the basis for vestibular function.
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