Sex-related ERP differences in deviance detection

被引：77

作者：

Nagy, E ^{[1
]}

Potts, GF

Loveland, KA

机构：

[1] Univ Texas, Sch Med, Dept Psychiat & Behav Sci, Ctr Human Dev Res, Houston, TX 77025 USA

[2] Rice Univ, Dept Psychol, Houston, TX 77251 USA

[3] Univ Dundee, Dept Psychol, Dundee DD1 4HN, Scotland

来源：

INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY | 2003年 / 48卷 / 03期

关键词：

auditory oddball; sex; event-related potential; novelty; MMN; P2; N2;

D O I：

10.1016/S0167-8760(03)00042-4

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

The effect of sex on neural mechanisms of auditory mismatch detection was examined using dense sensor array (128 channel) event-related potential recordings (ERPs). ERPs of 32 right-handed subjects (16 males) were recorded to frequent (85%, 880 Hz) and infrequent (15%, 1480 Hz) tones. There were no sex differences in mismatch negativity (80-180 ms), however, the fronto-central P2 (180-260 ms) was less positive in males (F=12.56, P<0.005) and the N2 (260-340 ms) was more negative in males (F=6.28, P<0.05). The increased negativity in males spanning the P2 and N2 may index a top-down process of attention bias towards novelty. This result supports the hypothesis of an adaptive, sexually dimorphic processing of novel events in humans. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：285 / 292

页数：8

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