Auditory discrimination: the relationship between psychophysical and electrophysiological measures.
Auditory discrimination: the relationship between psychophysical and electrophysiological measures.
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DOI：
10.3109/14992027.2012.699198
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发表时间：
2012-10
影响因子：
2.7
通讯作者：
Buchman CA
中科院分区：
文献类型：
--
作者：
He S;Grose JH;Buchman CA
本研究的目的是：1）探讨声学变化复合体（ACC）与频率、强度辨别和间隙检测的关系;以及2）检查声学变化对ACC的振幅和潜伏期的影响。频率和强度辨别以及间隙检测的心理物理阈值，以及由包含频率增量的刺激引起的ACC，或强度或间隙，从同一组受试者中记录。ACC记录的声学变化的幅度系统地变化。26名听力正常的成年人，年龄在19至39岁之间。电生理和心理物理措施的频率和强度的歧视显着相关。电生理阈值与心理物理阈值强度歧视，但高于心理物理阈值的差距检测和频率歧视。声学变化幅度的增加增加了ACC的振幅，但没有显示出一致的影响，跨声学尺寸的ACC潜伏期。ACC可作为频率和强度听觉辨别的客观指标。ACC波幅是一个比ACC潜伏期更好的听觉加工指标。
This study aimed to 1) investigate the relationship between the acoustic change complex (ACC) and perceptual measures of frequency and intensity discrimination, and gap detection; and 2) examine the effects of acoustic change on the amplitudes and latencies of the ACC. Psychophysical thresholds for frequency and intensity discrimination and gap detection, as well as ACCs elicited by stimuli containing increments in frequency, or intensity or gaps, were recorded from the same group of subjects. The magnitude of the acoustic change was systematically varied for the ACC recording. Twenty-six adults with normal hearing ranging in age between 19 and 39 years. Electrophysiological and psychophysical measures for frequency and intensity discrimination were significantly correlated. Electrophysiological thresholds were comparable to psychophysical thresholds for intensity discrimination but were higher than psychophysical thresholds for gap detection and frequency discrimination. Increasing magnitude of acoustic change increased the ACC amplitude but did not show consistent effects across acoustic dimensions for ACC latency. The ACC can be used as an objective index of auditory discrimination in frequency and intensity. The ACC amplitude is a better indicator for auditory processing than the ACC latency.
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影响因子：
3.7
作者：
Lister, Jennifer J.;Maxfield, Nathan D.;Pitt, Gabriel J.
通讯作者：
Pitt, Gabriel J.
影响因子：
2.8
作者：
Harris, Kelly C.;Mills, John H.;Dubno, Judy R.
通讯作者：
Dubno, Judy R.
影响因子：
4.7
作者：
Michalewski, HJ;Starr, A;Zeng, FG
通讯作者：
Zeng, FG
影响因子：
2.4
作者：
Buss, Emily;Hall, Joseph W., III;Grose, John H.
通讯作者：
Grose, John H.
影响因子：
2.4
作者：
WIER, CC;JESTEADT, W;GREEN, DM
通讯作者：
GREEN, DM