耳声发射抑制的研究：横向领域。
Study on suppression of otoacoustic emissions: lateral domain.
机构信息
Department of Mechanical Engineering, Paulista State University.
出版信息
Braz J Otorhinolaryngol. 2011 Sep-Oct;77(5):547-54. doi: 10.1590/s1808-86942011000500002.
UNLABELLED
A pon stimulation by contralateral, ipsilateral or bilateral noise, the medial olivocochlear efferent tract changes the amplitude of otoacoustic emissions relative to the tested ear, reducing or removing it; this resulted in a reduction/suppression effect of otoacoustic emissions. Differences in patterns of elimination/reduction of otoacoustic emissions between ears have been documented worldwide; there are, however, no Brazilian studies investigating the effect of lateral dominance.
AIMS
To compare the effect of the presence of deletion/reduction of otoacoustic emissions and their amplitude relative to lateral dominance in normal hearing adults.
METHODS
A clinical and experimental study. The sample comprised 75 individuals. The methodology was conventional - linear click intensity of 60 dB SPL; white noise was contralateral stimulation at 60 dB SPL. DESCRIPTION OF RESULTS: There were no statistically significant differences between right and left ear results, in terms of asymmetry of the degree of otoacoustic emissions and the presence of suppression/reduction.
CONCLUSION
There is no lateral dominance in the degree of otoacoustic emissions in the presence of suppression/reduction in the study population.
未加标签
对侧、同侧或双侧噪声刺激听神经后，内侧橄榄耳蜗传出纤维改变耳声发射的幅度，使其相对测试耳降低或消失；这导致耳声发射的降低/抑制效应。世界各地都有关于耳声发射消除/降低模式差异的记录；然而，巴西尚无研究调查侧优势的影响。
目的
比较正常听力成人中存在的耳声发射缺失/降低及其与侧优势相对的幅度的影响。
方法
临床和实验研究。样本包括 75 人。方法是常规的——60dB SPL 的线性点击强度；60dB SPL 的白噪声对侧刺激。结果描述：在抑制/降低的情况下，右耳和左耳的结果在耳声发射程度的不对称性和抑制/降低的存在方面没有统计学上的显著差异。
结论
在研究人群中，抑制/降低时，耳声发射程度没有侧优势。
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