Larson Christine L, Nitschke Jack B, Davidson Richard J
Department of Psychology, Michigan State University, East Lansing, MI 48824-1116 US.
Emotion. 2007 Feb;7(1):182-91. doi: 10.1037/1528-3542.7.1.182.
The authors examined the time course of affective responding associated with different affective dimensions--anxious apprehension, anxious arousal, and anhedonic depression--using an emotion-modulated startle paradigm. Participants high on 1 of these 3 dimensions and nonsymptomatic control participants viewed a series of affective pictures with acoustic startle probes presented before, during, and after the stimuli. All groups exhibited startle potentiation during unpleasant pictures and in anticipation of both pleasant and unpleasant pictures. Compared with control participants, symptomatic participants exhibited sustained potentiation following the offset of unpleasant stimuli and a lack of blink attenuation during and following pleasant stimuli. Common and unique patterns of affective responses in the 3 types of mood symptoms are discussed.
作者们使用情绪调节惊跳范式，研究了与不同情感维度（焦虑担忧、焦虑唤醒和快感缺失性抑郁）相关的情感反应的时间进程。在这三个维度中某一个维度得分高的参与者以及无症状的对照组参与者观看了一系列情感图片，在刺激呈现之前、期间和之后都呈现了听觉惊跳探针。所有组在观看不愉快图片时以及预期愉快和不愉快图片时都表现出惊跳增强。与对照组参与者相比，有症状的参与者在不愉快刺激结束后表现出持续的增强，并且在愉快刺激期间和之后缺乏眨眼减弱。文中讨论了三种情绪症状中情感反应的共同和独特模式。
