TY - JOUR
T1 - The influence of the efferent system on acoustic overstimulation
AU - Hildesheimer, Minka
AU - Makai, Ester
AU - Muchnik, Chava
AU - Rubinstein, Moshe
PY - 1990/1
Y1 - 1990/1
N2 - Since the first anatomical description by Rasmussen, the efferent innervation of the ear has been extensively investigated in order to establish its role in the hearing process. It is accepted that the olivocochlear bundle(OCB) influences the activity of the afferent fibers and through it, the peripheral ear is controlled by higher centers as well as connected to the other ear. Cody and Johnstone (1982) and Rajan and Johnstone (1983) concluded that the amount of ipsilateral temporary threshold shift (TTS) was reduced by simultaneous contralateral acoustic stimulation or by destroying the contralateral cochlea. They attributed the results to the efferent system. It was our aim to investigate whether, and under which conditions, the amount of TTS would be influenced by the efferent system. The efferent innervation was eliminated by cutting the superior vesibular nerve. Two factors influenced the magnitude of TTS; the integrity of the OCB and the functional condition of the contralateral ear.
AB - Since the first anatomical description by Rasmussen, the efferent innervation of the ear has been extensively investigated in order to establish its role in the hearing process. It is accepted that the olivocochlear bundle(OCB) influences the activity of the afferent fibers and through it, the peripheral ear is controlled by higher centers as well as connected to the other ear. Cody and Johnstone (1982) and Rajan and Johnstone (1983) concluded that the amount of ipsilateral temporary threshold shift (TTS) was reduced by simultaneous contralateral acoustic stimulation or by destroying the contralateral cochlea. They attributed the results to the efferent system. It was our aim to investigate whether, and under which conditions, the amount of TTS would be influenced by the efferent system. The efferent innervation was eliminated by cutting the superior vesibular nerve. Two factors influenced the magnitude of TTS; the integrity of the OCB and the functional condition of the contralateral ear.
KW - Efferent innervation
KW - Olivocochlear bundle
KW - Temporary threshold shift
UR - http://www.scopus.com/inward/record.url?scp=0025129096&partnerID=8YFLogxK
U2 - 10.1016/0378-5955(90)90233-F
DO - 10.1016/0378-5955(90)90233-F
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AN - SCOPUS:0025129096
SN - 0378-5955
VL - 43
SP - 263
EP - 267
JO - Hearing Research
JF - Hearing Research
IS - 2-3
ER -