Dipartimento di Scienze Chirurgiche Specialistiche, Università di Milano, Milan, Italy.
Acta Otorhinolaryngol Ital. 2012 Jun;32(3):170-4.
Several studies have previously demonstrated that postural changes modify evoked otoacoustic emission. In order to evaluate a possible interaction between eye muscles and ciliated cells in the inner ear, we studied the effects of eye lateralization on the contralateral suppression of transient evoked otoacoustic emissions (TEOAEs). Thirty-eight normal hearing subjects with TEOAEs were recruited. Their TEAOEs at threshold level were recorded with contralateral suppression (white noise) via straight ahead fixation and right or left lateral fixation. Eye lateralization in the same direction of the white noise significantly decreased the suppression at 4 kHz (p = 0.003). The signal-to-noise ratio in the suppression condition with straight ahead was 1.54 (± 4.610) dB, while the ratio was 3.48 (± 4.631) dB in the suppression condition with gaze toward the white noise. Eye lateralization seems to reduce the contralateral suppression effect of TEOAEs at 4 kHz. However, further studies are necessary to investigate the possible mechanisms of this phenomenon.
先前已有多项研究表明，姿势变化会改变诱发耳声发射。为了评估眼肌和内耳纤毛细胞之间可能存在的相互作用，我们研究了眼侧化对瞬态诱发耳声发射（TEOAEs）的对侧抑制的影响。我们招募了 38 名听力正常的受试者，通过正前方注视和右侧或左侧侧方注视，记录阈值水平的 TEOAEs 及其对侧抑制（白噪声）。与白噪声方向相同的眼侧化显著降低了 4 kHz 处的抑制（p = 0.003）。在正前方注视的抑制条件下，信噪比为 1.54（±4.610）dB，而在注视白噪声的抑制条件下，信噪比为 3.48（±4.631）dB。眼侧化似乎降低了 4 kHz 时 TEOAEs 的对侧抑制效应。然而，需要进一步的研究来探讨这一现象的可能机制。
