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KMID : 1143820100060020102
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Anxiety and Mood
2010 Volume.6 No. 2 p.102 ~ p.108
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Effects of Fear Stimuli by Means of a Video Clip on the Power Spectra of Electroencephalograms in Healthy Adults
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Kim Yoo-Ra
Chae Jeong-Ho
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Abstract
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Objective : Although studies have explored responses to fear had been assessed using various psychophysiological methods, results have been inconsistent. The present study examined psychophysiological responses in healthy subjects after viewing fear stimuli in a video clip for set up future fear related psychophysiological studies.
Methods: We monitored three psychophysiological variables (electroencephalography, skin temperature, and heart rate variability) in adults who watched either a control stimulus movie clip or a fear-inducing movie clip.
Results: In 16 healthy adults, theta activity decreased significantly after the fear stimulus as compared to the normal stimulus. However the participants showed no differences in heart rate variability or skin temperature between the fear and normal control stimulus situations.
Conclusion: In the limbic area, theta activity corresponds with information processing, integration into previous memories and long-term potentiation. In this study, we suggest decreased theta activity represents amygdalo-hippocampal activity, associated with fear, short-term memory, and memory extinction in the healthy adults. Further studies are needed to evaluate the interaction of fear, memory, and the pathophysiology of anxiety disorder in patient with anxiety disorders.
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KEYWORD
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Fear response, Heart rate variability, Skin temperature, Electroencephalography
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