Human pre-attentive auditory change-detection with single, double, and triple deviations as revealed by mismatch negativity additivity
Human pre-attentive auditory change-detection with single, double, and triple deviations as revealed by mismatch negativity additivity
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DOI：
10.1016/s0304-3940(01)02135-8
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发表时间：
2001-09
影响因子：
2.5
通讯作者：
C. Wolff;E. Schröger
中科院分区：
文献类型：
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作者：
C. Wolff;E. Schröger
使用听觉事件相关脑电位的失配负性（MMN）成分研究了前注意自动听觉特征分析的功能性质。记录一维、二维或三维（持续时间 (D)、频率 (F)、强度 (I)）偏离的被忽略声音的 MMN。当多个特征同时偏离的刺激引起的相应 MMN 过程彼此独立时，多个偏差引起的经验测量 MMN 等于相应单个偏差引起的 MMIN 之和。事实上，双 DF 偏差和双 DI 偏差的 MMN 在额中央以及颞下位点表现出可加性，而双 FI 偏差的 MMN 和三重 DFI 偏差的 MMN 仅在颞下位点具有相加性，表明额叶和颞叶 MMN 生成器揭示了不同程度的可加性。这一发现表明，并非所有刺激维度的组合都是相互独立处理的。
The functional nature of the pre-attentive automatic auditory feature analysis was investigated using the mismatch negativity (MMN) component of the auditory event-related brain potential. MMNs to ignored sounds deviating in one, two or three dimensions (duration (D), frequency (F), intensity (I)) were recorded. When the corresponding MMN processes elicited by stimuli simultaneously deviating in multiple features are independent from each other, then the empirically measured MMN elicited by multiple deviants equals the sum of the MMINs elicited by the corresponding single deviants. Indeed, MMNs to double DF- and to double DI-deviants showed additivity for frontocentral as well as for subtemporal sites, whereas MMN to double FI-deviants and MMN to triple DFI-deviants were additive only at subtemporal sites indicating that frontal and temporal MMN generators reveal differential degree of additivity. This finding demonstrates that not all combinations of stimulus dimensions are processed independently from each other.