scala tympani


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Related to scala tympani: Scala media, scala vestibuli, vestibular membrane

scala

 [ska´lah] (L.)
a ladderlike structure, especially any of various passages of the cochlea.
scala me´dia cochlear duct.
scala tym´pani the part of the cochlea below the spiral lamina.
scala vesti´buli the part of the cochlea above the spiral lamina.

sca·la tym·'pa·ni

[TA]
the division of the spiral canal of the cochlea lying on the basal side of the spiral lamina.

scala tympani

(tĭm′pə-nī′)
n. pl. scalae tympanorum (-nôr′əm)
The lowermost of the three divisions of the spiral cavity winding around the modiolus of the cochlea in the inner ear. It is filled with perilymph and transmits sound vibrations from the scala vestibuli, with which it is contiguous at the apex of the cochlea.

scala tympani

See helicotrema.

sca·la tym·pa·ni

(skā'lă tim'păn-ī) [TA]
The division of the spiral canal of the cochlea lying on the basal side of the spiral lamina.

scala tympani

A fluid-filled passage in the cochlea running on the outside of the cochlear duct from the tip of the basilar membrane at the HELICOTREMA to the round window in the middle ear where it communicates with the scala verstibuli.

scala tympani

the lower chamber of the cochlea in mammals, filled with perilymph which ends in the fenestra rotunda. It connects with the scala vestibuli via the helicotrema.

scala

pl. scalae [L.] a ladder-like structure, applied especially to various passages of the cochlea.

scala media
the cochlear duct: a space in the ear between Reissner's membrane and the basilar membrane.
scala tympani
the part of the cochlea below the spiral lamina.
scala vestibuli
the part of the cochlea above the spiral lamina.
References in periodicals archive ?
The model findings were then evaluated in the experimental animal with comparisons of current distributions in the terminal auditory nerve fibers for monopolar as well as bipolar stimulation in the scala tympani (Figure 5) and between electrodes placed in the scala tympani and the scala vestibuli.
The first safety question was, Could multiple electrodes be placed safely within the scala tympani of the cochlea [36-38] without significant damage to its delicate structures and especially the auditory nerve fibers?
My research on biological safety began in 1972 [45], and it demonstrated that when multiple electrodes were inserted into the scala tympani of the cochlea through a number of holes drilled in the overlying bone, marked damage of all structures and associated loss of the auditory nerve fibers were found (Figure 9) [45].
The second question was, What were the right mechanical properties required for an electrode bundle to pass upward far enough without trauma around the scala tympani and lie opposite the auditory nerves and transmit speech frequencies on a place coding basis?
The electrode carriers were found to pass only 10 to 15 mm upward into the tightening spiral of scala tympani of the basal turn.
studied the diffusion of radioiodine (NT-3) instilled into the scala tympani and found that 125I-labeled NT-3 reached all the turns of the cochlea after only 24 hours but the density of the signal varied for different structures in each turn of the cochlea [186].
Because the research just discussed showed the delivery of a nerve growth factor into the cochlea with a Micropump was inefficient, its localized release from a polymer in the scala tympani was a better option.
Research showed that factors such as trauma, infection, or just implantation would cause fibrous tissue and bone in the scala tympani and be associated with hair cell loss [188].
Electrode Manufacturer Type Cochlear Banded[TM] Cochlear Limited Straight Spiral Clarion[TM] Advanced Bionics Spiral Cochlear Contour [TM] Cochlear Limited Spiral HiFocus II[TM] with Positioner <400[degrees] Advanced Bionics Curved with Positioner HiFocus II[TM] with Positioner >400[degrees] Advanced Bionics Curved with Positioner Contour Advance[TM] Cochlear Limited Spiral Nurobiosys Nurobiosys Straight Helix[TM] Advanced Bionics Spiral Prototype 1 Advanced Bionics Curved Scala Tympani Electrode Position No.
Staecker et al reported (1) that direct infusion of either neurotrophin-3 or BDNF into the scala tympani of a guinea pig cochlea after a loss of auditory hair cells compensates for the loss of trophic support (i.