Markessis Emily, Nasr-Addine Hanane, Colin Cécile, Hoonhorst Ingrid, Collet Grégory, Deltenre Paul, Munro Kevin J, Moore Brian C J
Faculté de Medecine, Université Libre de Bruxelles, Brussels, Belgium.
Int J Audiol. 2009 Feb;48(2):55-62. doi: 10.1080/14992020802441807.
The effect of the level of threshold equalizing noise (TEN) on the diagnosis of dead regions (DRs) was investigated. Participants comprised 23 adults with sensorineural hearing impairment. Masked thresholds were measured monaurally with TEN at 60, 70, 80, and 90 dB HL/ERB(N). Absolute and masked thresholds (with TEN at 80 dB HL/ERB(N)) were retested. The diagnosis was unaffected by TEN level at any frequency for eight of the 13 participants who met the criteria for a DR. For four of the latter, increasing the TEN level changed the diagnosis from DR to no DR, mainly at 1.5 kHz, corresponding to the edge frequency, f(e), of the DR. For one participant with a low-frequency DR, increasing the TEN level changed the diagnosis from no DR to DR, only at 1 kHz. The changes with level were too large to be explained in terms of test repeatability. Overall, the results of the TEN test are usually not affected by TEN level, except for test frequencies close to f(e) when absolute thresholds are near-normal for frequencies adjacent to f(e).
研究了阈值均衡噪声（TEN）水平对死区（DR）诊断的影响。研究对象包括23名感音神经性听力损失的成年人。在60、70、80和90 dB HL/ERB（N）的TEN条件下，单耳测量掩蔽阈值。对绝对阈值和掩蔽阈值（TEN为80 dB HL/ERB（N）时）进行重新测试。对于13名符合DR标准的参与者中的8名，在任何频率下，TEN水平均不影响诊断。对于其中4名参与者，提高TEN水平会使诊断结果从DR变为无DR，主要发生在1.5 kHz，对应于DR的边缘频率f（e）。对于一名低频DR参与者，提高TEN水平仅在1 kHz时使诊断结果从无DR变为DR。水平变化太大，无法用测试重复性来解释。总体而言，TEN测试结果通常不受TEN水平影响，除非测试频率接近f（e），且f（e）相邻频率的绝对阈值接近正常。
