Accommodating to new ears: The effects of sensory and sensory-motor feedback
Accommodating to new ears: The effects of sensory and sensory-motor feedback
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DOI：
10.1121/1.4868369
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发表时间：
2014-04-01
影响因子：
2.4
通讯作者：
Kelly, Heather
中科院分区：
文献类型：
--
作者：
Carlile, Simon;Balachandar, Kapilesh;Kelly, Heather
使用小的入耳式模具改变外耳的形状会降低声音定位性能，这与单声道频谱线索对位置的失真一致。最近的研究表明，成年听众会重新校准这些新的频谱线索，以确定视野内外的位置。这就提出了一个问题，即这种显著的功能可塑性的教师信号。此外，适应程度和速度的巨大个体差异表明，许多因素可能正在推动这一过程。利用多模态和感觉运动反馈调节过程中的训练范式进行了检查，以确定它是否可能加速这一过程。为了标准化光谱提示的修改，为每个受试者定制填充每个外耳体积的40%的模具。每天训练约一小时，包括重复的听觉刺激和受试者的探索行为，显著改善了前后混淆和极角定位误差测量的调节程度，前后混淆误差证明了调节率的一些改善。这项工作的过程中，听觉空间的连贯表示是保持和助听器佩戴者的解释性培训的影响。(C)2014年美国声学学会。
Changing the shape of the outer ear using small in-ear molds degrades sound localization performance consistent with the distortion of monaural spectral cues to location. It has been shown recently that adult listeners re-calibrate to these new spectral cues for locations both inside and outside the visual field. This raises the question as to the teacher signal for this remarkable functional plasticity. Furthermore, large individual differences in the extent and rate of accommodation suggests a number of factors may be driving this process. A training paradigm exploiting multi-modal and sensory-motor feedback during accommodation was examined to determine whether it might accelerate this process. So as to standardize the modification of the spectral cues, molds filling 40% of the volume of each outer ear were custom made for each subject. Daily training sessions for about an hour, involving repetitive auditory stimuli and exploratory behavior by the subject, significantly improved the extent of accommodation measured by both front-back confusions and polar angle localization errors, with some improvement in the rate of accommodation demonstrated by front-back confusion errors. This work has implications for both the process by which a coherent representation of auditory space is maintained and for accommodative training for hearing aid wearers. (C) 2014 Acoustical Society of America.