Time window for cognitive activity involved in emotional processing

Journal of Physiological Anthropology

Shigeki Watanuki¹  Riko Matsumoto²  Damee Choi²  Takayuki Nishimura⁴  Yuka Egashira²  Midori Motoi³ 

[1] Faculty of Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan;Graduate School of Integrated Frontier Sciences, Kyushu University, 4-9-1, Shiobaru, Minami-ku, Fukuoka 815-8540, Japan;Graduate School of Integrated Frontier Sciences, Kyushu University, JSPS Research Fellow DC, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan;Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan

关键词: Unpleasant;    Pleasant;    BIS/BAS;    Late positive potentials;    N100;    Event-related potentials;   

Others  :  1139851
DOI  :  10.1186/1880-6805-33-21

 received in 2014-04-07, accepted in 2014-06-20,  发布年份 2014

【 摘 要 】

Background

From previous studies it is becoming evident that the processing of unpleasant stimuli occurs early (0 to 300 ms); however, it is not clear how cognitive processing related to pleasant/unpleasant emotions occurs at later time windows (≥300 ms). On the other hand, as evident from the previous reports, BIS and BAS personality traits are strongly associated with unpleasant and pleasant responses, respectively. Therefore, in the present study, we aim to identify the time window involved in human pleasant/unpleasant emotional processing by investigating ERP components correlated with BIS/BAS personality traits.

Methods

Twenty-nine men took part in the study and recording ERP during presented sounds. BIS/BAS score was calculated using the Japanese edition of the BIS/BAS questionnaire.

Results

Significant correlation was not observed between BIS and BAS scores. A significant and positive correlation was observed between N100 amplitude and BIS score. A positive correlation was found between BAS fun seeking subscale score and LPP amplitude. Our findings did not contradict previous study results.

Conclusions

Our results suggest that the processing of unpleasant emotions takes place early on, since N100 response was larger in high BIS subjects who are known to be sensitive to unpleasant emotions. LPP was larger in high BAS subjects who are known to be sensitive to pleasant emotions. The LPP was considered to be augmented because the ACC activity level during pleasant emotions reflected on LPP.

【 授权许可】

   
2014 Motoi et al.; licensee BioMed Central Ltd.

【 图 表 】

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