Stimulus-preceding negativity and heart rate changes in anticipation of affective pictures
Stimulus-preceding negativity and heart rate changes in anticipation of affective pictures
复制标题
DOI：
10.1016/j.ijpsycho.2007.02.008
复制
发表时间：
2007-07-01
影响因子：
3
通讯作者：
Palomba, Daniela
中科院分区：
文献类型：
--
作者：
Poli, Silvia;Sarlo, Michela;Palomba, Daniela
本研究的目的是探讨刺激前负性（SPN）和心率变化在不同情绪内容的视觉刺激预期中的情感调节。在S1-S2任务中，用一个单词（S1）表示随后的情绪图片（S2）的内容。效价维度和唤醒维度均通过呈现积极和消极图片、高唤醒和低唤醒来操纵。无论效价如何，在高唤醒图像出现之前，SPN的振幅都明显大于低唤醒图像，这表明SPN确实反映了情感刺激的动机投入强度。高唤醒刺激前的心率反应比中性刺激大。结果表明，在情感预期期间，皮层和外周测量都有一致的反应模式。(C) 2007 Elsevier B.V.版权所有
The aim of the present study was to investigate the affective modulation of the Stimulus-Preceding Negativity (SPN) and heart rate changes in anticipation of visual stimuli differing in emotional content. A S1-S2 task was employed with a word (S1) indicating the content of a subsequent emotional picture (S2). Both valence and arousal dimensions were manipulated by presenting positive and negative pictures, high and low in arousal. Irrespective of valence, the amplitude of the SPN resulted to be significantly larger preceding high rather than low arousal pictures, indicating that the SPN does reflect the intensity of the motivational engagement ascribed to affective stimuli. Heart rate responses showed a deceleration preceding S2, which was larger preceding high arousal stimuli in comparison with neutral stimuli. Results suggest a coherent response pattern in both cortical and peripheral measures during affective anticipation. (C) 2007 Elsevier B.V. All rights reserved.