Term
|
Definition
| Mazelike, interconnecting, fluid-filled canals that form the inner ear |
|
|
Term
|
Definition
| Part of the labyrinth inside the bony labyrinth that is composed of soft tissue and consists of a series of comminicating sacs and ducts that conform to the shape of the larger bony labyrinth. Is is filled with endolymph. |
|
|
Term
|
Definition
| Outer portion of the labyrinth that is filled with perilymph and surrounds the membranous labyrinth. It contains the cochlea, the three semicircular canals, and the vestibule. |
|
|
Term
|
Definition
| Fluid found in the osseous labyrinth of the inner ear. |
|
|
Term
|
Definition
| Section of the inner ear involving hearing; contains the organ of Corti, the sense organ for hearing. |
|
|
Term
|
Definition
| Three canals, each of which represent a body plane in space and moves in conjunction with head and body activity; provide information to the brain about head position and movement. |
|
|
Term
|
Definition
| Central part of the labyrinth. |
|
|
Term
|
Definition
| One of two communicating sacs found in the membranous labyrinth. Along with the saccule, it plays a role in maintaing spatial orientation. |
|
|
Term
|
Definition
| One of two communicating sacs found in the membranous labyrinth. along with the Utricle, it plays a role in maintaining spacial orientation. |
|
|
Term
|
Definition
| Middle of the three canals within the cochlea; contains the organ if Corti |
|
|
Term
|
Definition
| Fluid found in the membranous labyrinth |
|
|
Term
|
Definition
| Section of the inner ear that is concerned with balance and spatial orientation. |
|
|
Term
|
Definition
| Middle of the three canals within the cochlea; contains the organ or Corti. |
|
|
Term
|
Definition
| One of the three canals within the cochlea, separated from the Scala Media by Reissner's membrane. |
|
|
Term
|
Definition
| One of the three canals within the cochlea, separated from the scala media by the Basilar membrane. |
|
|
Term
|
Definition
| Tissue that separates the Scala vestibuli from the scala media |
|
|
Term
|
Definition
| Tissue that separates the scala media from the scala tympani; holds the organ of Corti. |
|
|
Term
|
Definition
| Sensory end organ of hearing |
|
|
Term
|
Definition
| Small, hairlike projections on the tops of the inner and outer hair cells. Each outer haircell has as many as 150 stereocilia, and each inner haircell has 50 to 70 stereocilia. Displacement of the stereocilia results in depolarization of the neural charge. |
|
|
Term
|
Definition
| Branch of cranial nerve VIII that is formed as the hair cells of the organ of Corti synapse with nerve fibers. also called the auditory branch of cranial nerve VIII. |
|
|
Term
|
Definition
| Branch of cranial nerve VIII that originates from the vestibular portion of the inner ear and joins with the cochlear nerve. |
|
|
Term
|
Definition
| cranial nerve VIII, consisting of the suditory and vestibular branches; transmits information about hearing and balance |
|
|
Term
|
Definition
| Tiny openings in the cochlea that allow neural fibers to pass to the organ of Corti. |
|
|
Term
|
Definition
| Vascular complex that maintains the chemical compositioon of the endolymph in the cochlea |
|
|
Term
|
Definition
| Difference in width and thickness (i.e., relative mass and stiffness) from the base to the apex of the basilar membrane. It results in variations in resonance at different locations of the basilar membrane. |
|
|
Term
|
Definition
| Complex pattern of vibration of the basilar membrane as pure-tome disturbances grow in magnitude from the base to the resonant point on the basilar membrane. |
|
|
Term
|
Definition
| point of attachment for the tectorial membrane within the organ or Corti. |
|
|
Term
|
Definition
| Ionic exchange that alters the electrical potential of a hair cell, resulting in the release of a neurotransmitter. |
|
|
Term
|
Definition
| Sounds produced by the cochlea. They may be evoked or spontaneous. |
|
|
Term
| Spontaneous Otoacoustic Emissions |
|
Definition
| Otoacoustic emissions that are produced without stimulation. |
|
|
Term
| Evoked Otoacoustic Emissions |
|
Definition
| Sounds produced by the cochlea in response to stimulation with clicks or carefully selected and arranged pure tones of very brief duration. |
|
|
Term
|
Definition
| Alternating current (AC) potential in the cochlea that varies in exactly the same manner as stimulus and is only present while the stimulus is present. |
|
|
Term
|
Definition
| Stimlus-related direct current (DC) response in the cochlea. |
|
|
Term
| Whole-nerve Action Potential |
|
Definition
| Response that originates in cranial nerve VIII. It is seen only at the onset of an abrupt signal and represents the synchronous discharge of many cranial nerve VIII fibers. |
|
|
Term
|
Definition
| Record of the responsiveness of a single hair cell to a variety of frequencies. |
|
|
Term
|
Definition
| Frequency at which the lowest level of stimulation results in an increase of firing rate. |
|
|
Term
|
Definition
| Functional component of the auditory system, consisting of the inner ear. |
|
|
Term
|
Definition
| Functional component of the auditory system, consisting of the inner ear. |
|
|
Term
|
Definition
| LArgest of two direct current (DC) potentials that can be measured in the cochlea, with no stimulation necessary, seen in the endolymph |
|
|
