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KMID : 1007420150130030144
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Mood and Emotion
2015 Volume.13 No. 3 p.144 ~ p.149
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Time Perception with Auditory Stimulus and Manic Symptoms in Patients with Bipolar Disorder
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Jung Chung-Su
Sohn In-Ki
Park Seong-Yong
Seo Jeong-Seok
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Abstract
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Objectives : The purpose of this study was to investigate 1) whether there would be significant changes in time perception between acute manic and euthymic states and 2) whether changes in time perception with auditory stimulus in patients with bipolar disorder would be consistent with changes in time perception with visual stimulus.
Methods : The thirty-eight patients who were diagnosed as manic episode of bipolar disorder participated in this study. They were presented with a time reproduction task at two states - acute manic state and euthymic state. Participants were asked to listen for “beep” sound for a certain length of time. After that, they were asked to reproduce the same length of time. The severity of mood symptom was assessed with Young Mania Rating Scale (YMRS).
Results : Time reproduction for 11 seconds, 36 seconds in acute manic state were shorter than in euthymic state and time reproduction in acute manic state were correlated with YMRS score.
Conclusion : Time reproduction is shorter in acute manic state than in euthymic state. And the severity of manic symptom is correlated with time perception. This result is consistent with previous studies with visual stimulus and suggests that the difference between cognitive process of visual stimulus and auditory stimulus does not affect time perception.
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KEYWORD
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Bipolar disorder, Time perception, Time reproduction task
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