Automatic attention to emotional stimuli:: Neural correlates
Automatic attention to emotional stimuli:: Neural correlates
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DOI：
10.1002/hbm.20037
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发表时间：
2004-08-01
影响因子：
4.8
通讯作者：
Tapia, M
中科院分区：
文献类型：
--
作者：
Carretié, L;Hinojosa, JA;Tapia, M
我们研究了情感和非情感视觉刺激捕获自动注意的能力，这是认知和情感过程之间相互作用的一个方面，研究人员很少关注。事件相关电位记录从37名受试者使用60电极阵列，并提交给时间和空间的主成分分析，以检测和量化的主要成分，并源定位软件（LORETA），以确定其空间起源。刺激捕获自动注意的三种类型：情绪积极，情绪消极，和非情绪图片。结果表明，最初（P1：105毫秒刺激后），自动注意力被捕获的负面图片，而不是积极的或非情绪的。稍后（P2：180毫秒），自动注意力仍然被负面图片捕获，但也被正面图片捕获。最后（N2：240毫秒），注意力只被积极的和非情绪的刺激所捕获。从解剖学上讲，这一序列的特点是减少激活的视觉联合皮层（VAC）和增长的参与，从背侧到腹侧地区，前扣带皮层（ACC）。分析表明，ACC，而不是VAC是负责上述实验效果。因此，与自动注意相关的神经活动的强度、潜伏期和位置显然取决于刺激的情感内容及其相关的生物学重要性。(C)2004 Wiley-Liss，Inc.
We investigated the capability of emotional and nonemotional visual stimulation to capture automatic attention, an aspect of the interaction between cognitive and emotional processes that has received scant attention from researchers. Event-related potentials were recorded from 37 subjects using a 60-electrode array, and were submitted to temporal and spatial principal component analyses to detect and quantify the main components, and to source localization software (LORETA) to determine their spatial origin. Stimuli capturing automatic attention were of three types: emotionally positive, emotionally negative, and nonemotional pictures. Results suggest that initially (P1: 105 msec after stimulus), automatic attention is captured by negative pictures, and not by positive or nonemotional ones. Later (P2: 180 msec), automatic attention remains captured by negative pictures, but also by positive ones. Finally (N2: 240 msec), attention is captured only by positive and nonemotional stimuli. Anatomically, this sequence is characterized by decreasing activation of the visual association cortex (VAC) and by the growing involvement, from dorsal to ventral areas, of the anterior cingulate cortex (ACC). Analyses suggest that the ACC and not the VAC is responsible for experimental effects described above. Intensity, latency, and location of neural activity related to automatic attention thus depend clearly on the stimulus emotional content and on its associated biological importance. (C) 2004 Wiley-Liss, Inc.