Differential cortical processing of location and pitch changes in dichotic pitch
Differential cortical processing of location and pitch changes in dichotic pitch
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DOI：
10.1097/01.wnr.0000203358.72814.df
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发表时间：
2006-03-20
期刊：
影响因子：
1.7
通讯作者：
Fitzgibbon, BM
中科院分区：
文献类型：
--
作者：
Johnson, BW;Hautus, MJ;Fitzgibbon, BM
本研究的目的是确定听觉失配负波是否可以引起的空间和非空间线索的变化，在双耳分听音高。与会者提出了块标准的双耳分音音高刺激，其中位置或音高偶尔变化。不匹配负性可靠地引起了偏差的位置，相比之下，没有可测量的不匹配负性反应，发现偏差音高。一个单独的心理物理筛选程序排除了参与者听不到音高偏差的可能性。研究结果表明，空间和非空间功能的双耳分音音高接收差分处理在听觉系统内的预注意水平的分析，并支持最近的概念，双处理流在听力。NeuroReport 17：389 - 393（c）2006 Lippincott威廉姆斯和威尔金斯。
The objective of this study was to determine whether the auditory mismatch negativity can be elicited by changes in spatial and nonspatial cues within dichotic pitches. Participants were presented with blocks of standard dichotic pitch stimuli in which location or pitch was occasionally varied. A mismatch negativity was reliably elicited by deviant locations; in contrast, no measurable mismatch negativity response was found for deviant pitches. A separate psychophysical screening procedure ruled out the possibility that participants could not hear the pitch deviations. The results indicate that spatial and nonspatial features of dichotic pitch receive differential processing at a preattentive level of analysis within the auditory system and are supportive of recent notions of dual processing streams in audition. NeuroReport 17:389-393 (c) 2006 Lippincott Williams & Wilkins.