胃肌电活动作为情绪唤醒的一个指标。
Gastric myoelectrical activity as an index of emotional arousal.
作者信息
Vianna E P M, Tranel D
机构信息
Division of Cognitive Neuroscience, Department of Neurology, Roy J. and Lucille A. Carver College of Medicine, 200 Hawkins Drive, Iowa City, Iowa, 52242, USA.
出版信息
Int J Psychophysiol. 2006 Jul;61(1):70-6. doi: 10.1016/j.ijpsycho.2005.10.019. Epub 2006 Jan 3.
Autonomic nervous system parameters such as electrodermal activity, heart rate, and facial EMG have been utilized extensively as measures of emotional arousal. One measure that has rarely been employed in this setting is gastric myoelectrical activity, despite the fact that "gut feelings" have an obvious and even profound role in everyday emotional life. It has been shown that the gastrointestinal system changes wall tonus and contraction rate during stressful tasks. However, the effects of emotionally salient stimuli on gastrointestinal motility have scarcely been studied. In the current study, emotional film clips designed to elicit happiness, disgust, fear, sadness, or no emotion (neutral) were presented to 16 normal participants. Electrogastrogram (EGG), skin conductance, and heart rate were measured while the participants viewed the film clips, and participants rated subjective arousal intensity and pleasantness of the film clips. We found that emotional film clips reliably induced the intended subjective feeling states. Also, EGG peak amplitudes in fear, disgust, sadness and happiness were higher than in the no emotion condition. There was a strong positive correlation (r=0.64) between EGG peak amplitude and subjective ratings of arousal. This is the first evidence that gastric myoelectrical activity is strongly correlated with arousal ratings to emotionally salient stimuli, and it suggests that EGG may add useful information about how the body contributes to the phenomenology of emotion and feeling.
自主神经系统参数,如皮肤电活动、心率和面部肌电图,已被广泛用作情绪唤醒的指标。尽管“直觉”在日常情绪生活中有着明显甚至深刻的作用,但在这种情况下很少被采用的一个指标是胃肌电活动。研究表明,在压力任务期间,胃肠系统会改变壁张力和收缩率。然而,情绪显著刺激对胃肠动力的影响几乎没有得到研究。在本研究中,向16名正常参与者展示了旨在引发快乐、厌恶、恐惧、悲伤或无情绪(中性)的情绪电影片段。在参与者观看电影片段时测量了胃电图(EGG)、皮肤电导和心率,并且参与者对电影片段的主观唤醒强度和愉悦度进行了评分。我们发现情绪电影片段可靠地诱发了预期的主观感觉状态。此外,恐惧、厌恶、悲伤和快乐状态下的EGG峰值幅度高于无情绪状态。EGG峰值幅度与唤醒的主观评分之间存在强正相关(r = 0.64)。这是第一个证据表明胃肌电活动与对情绪显著刺激的唤醒评分密切相关,并且这表明EGG可能会增加有关身体如何影响情绪和感觉现象学的有用信息。