The Effect of Free-Field Presentation and Processing Strategy on a Measure of Spectro-Temporal Processing by Cochlear-Implant Listeners.
The Effect of Free-Field Presentation and Processing Strategy on a Measure of Spectro-Temporal Processing by Cochlear-Implant Listeners.
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DOI：
10.1177/2331216520964281
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发表时间：
2020-01
影响因子：
2.7
通讯作者：
Carlyon RP
中科院分区：
文献类型：
--
作者：
Archer-Boyd AW;Goehring T;Carlyon RP
条纹（调查处理器有效性的光谱-时间纹波）测试是一种为人工耳蜗（CI）听者开发的光谱-时间分辨率心理物理测试。在此之前，测试一直受到严格控制，以尽量减少外来的、非光谱时间线索的引入。在这里，我们研究了放松这些控制的效果，以确定条纹试验的普遍性。从条纹刺激中去除预强调补偿，测试在扬声器上播放，音量类似于会话语音，高于CI处理器的自动增益控制阈值，听众使用他们的临床设备的日常设置进行测试。对于测试的10个CI监听器，在不同条件下测量的条纹阈值没有显著差异。一个听者在与他们的临床处理器一起听时获得了更高（更好）的阈值。纵向分析结果显示，在相似条件下的多次听力会话中，STRIPES具有出色的重测信度。总的来说，结果表明条纹测试对外来线索是稳健的，并且阈值随着时间的推移是可靠的。对于不同的处理策略、自由场表示和非研究设置，它是足够健壮的。
The STRIPES (Spectro-Temporal Ripple for Investigating Processor EffectivenesS) test is a psychophysical test of spectro-temporal resolution developed for cochlear-implant (CI) listeners. Previously, the test has been strictly controlled to minimize the introduction of extraneous, nonspectro-temporal cues. Here, the effect of relaxing many of those controls was investigated to ascertain the generalizability of the STRIPES test. Preemphasis compensation was removed from the STRIPES stimuli, the test was presented over a loudspeaker at a level similar to conversational speech and above the automatic gain control threshold of the CI processor, and listeners were tested using the everyday setting of their clinical devices. There was no significant difference in STRIPES thresholds measured across conditions for the 10 CI listeners tested. One listener obtained higher (better) thresholds when listening with their clinical processor. An analysis of longitudinal results showed excellent test–retest reliability of STRIPES over multiple listening sessions with similar conditions. Overall, the results show that the STRIPES test is robust to extraneous cues, and that thresholds are reliable over time. It is sufficiently robust for use with different processing strategies, free-field presentation, and in nonresearch settings.
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