Intermodal selective attention: evidence for processing in tonotopic auditory fields.
Intermodal selective attention: evidence for processing in tonotopic auditory fields.
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多式联运选择性注意：音调听觉场处理的证据。
DOI：
10.1111/j.1469-8986.1993.tb03355.x
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发表时间：
1993
期刊：
影响因子：
3.7
通讯作者：
Algazi,A
中科院分区：
文献类型：
--
作者：
Woods,DL;Alho,K;Algazi,A
在通道间选择性注意任务中记录250和4，000 Hz短纯音的听觉事件相关脑电位（ERP）。听觉N1（平均峰值潜伏期116 ms）上升相的头皮分布中存在明显的音调分布性变化; 4，000-Hz后的N1比250-Hz短纯音后的N1更向前分布，并且包括对侧P90成分，该成分在250-Hz音调后缺失。与通道间选择性注意相关的事件相关电位被分离为负性和正性听觉差异波（Nda和Pdas）。Ndanor和Pdashowed的分布均不随音频的变化而变化，但都表现出耳×频的分布变化。异常音调的ERP包括失配负波（MMN）和注意听觉条件下的N2 b和P3成分。这些成分在头皮分布中不随音调频率而变化。一个可能的解释是，tonotopic位移的ERP分布在头皮表面上依赖于角位移发生器领域的回转凸。结果与听觉处理向外辐射的可能性一致，即随着潜伏期的增加，听觉处理从Heschl回的音调定位区域向外辐射到颞平面和前上级颞平面的更多无回区域。
Auditory event‐related brain potentials (ERPs) were recorded for 250‐ and 4,000‐Hz tone bursts in an intermodal selective attention task. Tonotopic changes were evident in the scalp distribution of the rising phase of the auditory N1 (mean peak latency 116 ms); the N1 was more frontally distributed following the 4,000‐Hz than following the 250‐Hz tone bursts, and it included a contralateral P90 component that was absent following 250‐Hz tones. ERPs related to intermodal selective attention were isolated as negative and positive auditory difference waves (Ndaand Pdas). Neither the Ndanor the Pdashowed changes in distribution with tone frequency, but both showed Ear × Frequency changes in distribution. ERPs for deviant tones included mismatch negativities (MMNs) and, in attend auditory conditions, N2b and P3 components. These components did not change in scalp distribution with tone frequency. One possible explanation is that tonotopic displacements of ERP distributions on the scalp surface depend on angular displacements in generator fields on gyral convexities. The results are consistent with the possibility that auditory processing radiates outward with increasing latency from tonotopic fields on Heschl's gyri to more gyrus‐free regions of the planun temporale and anterior superior temporal plane.