Spatiotemporal analysis of event-related current density reveals dissociable effects of arousal and valence on emotional picture processing

Donghoon Yeo, Hyun Kim, Seongjin Her, Jeong Woo Choi, Kwang Su Cha, Kyunghwan Kim

Research output: Contribution to journalArticle

Abstract

Background: The processing of emotional visual stimulation involves the processing of emotional and visuoperceptual information. It is not completely revealed how the valence and arousal affect these two aspects. The objective was to investigate the effects of valence and arousal on spatiotemporal characteristics of cortical information processing using distributed source imaging of event-related current density (ERCD). Methods: Electroencephalograms (64 channels) were recorded from 19 healthy men while presenting affective pictures. Distributed source localization analysis was adopted to obtain the spatiotemporal pattern of ERCD on cortical surface in response to emotional visual stimulation. A nonparametric cluster-based permutation test was used to find meaningful time and space without prior knowledge. Results: Significant changes of ERCD in 400-800 ms among positive, negative, and neutral emotional conditions were found in left posterior cingulate cortex (PCC) and right inferior temporal cortex (ITC). In the PCC, the stimuli with higher arousal levels showed more negative ERCD than neutral stimuli. In the ITC, the ERCD for negative stimuli was significantly more negative than those of positive and neutral ones. Conclusion: Arousal and valence had strong influence on memory encoding and visual analysis at late period. The location and time showing significant change in neural activity according to arousal and valence would provide valuable information for understanding the changes of cortical function by neuropsychiatric disorders.

Original languageEnglish
Article numbere146
JournalJournal of Korean medical science
Volume34
Issue number20
DOIs
Publication statusPublished - 2019 May 27

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Spatio-Temporal Analysis
Arousal
Photic Stimulation
Gyrus Cinguli
Temporal Lobe
Automatic Data Processing
Electroencephalography

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

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title = "Spatiotemporal analysis of event-related current density reveals dissociable effects of arousal and valence on emotional picture processing",
abstract = "Background: The processing of emotional visual stimulation involves the processing of emotional and visuoperceptual information. It is not completely revealed how the valence and arousal affect these two aspects. The objective was to investigate the effects of valence and arousal on spatiotemporal characteristics of cortical information processing using distributed source imaging of event-related current density (ERCD). Methods: Electroencephalograms (64 channels) were recorded from 19 healthy men while presenting affective pictures. Distributed source localization analysis was adopted to obtain the spatiotemporal pattern of ERCD on cortical surface in response to emotional visual stimulation. A nonparametric cluster-based permutation test was used to find meaningful time and space without prior knowledge. Results: Significant changes of ERCD in 400-800 ms among positive, negative, and neutral emotional conditions were found in left posterior cingulate cortex (PCC) and right inferior temporal cortex (ITC). In the PCC, the stimuli with higher arousal levels showed more negative ERCD than neutral stimuli. In the ITC, the ERCD for negative stimuli was significantly more negative than those of positive and neutral ones. Conclusion: Arousal and valence had strong influence on memory encoding and visual analysis at late period. The location and time showing significant change in neural activity according to arousal and valence would provide valuable information for understanding the changes of cortical function by neuropsychiatric disorders.",
author = "Donghoon Yeo and Hyun Kim and Seongjin Her and Choi, {Jeong Woo} and Cha, {Kwang Su} and Kyunghwan Kim",
year = "2019",
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Spatiotemporal analysis of event-related current density reveals dissociable effects of arousal and valence on emotional picture processing. / Yeo, Donghoon; Kim, Hyun; Her, Seongjin; Choi, Jeong Woo; Cha, Kwang Su; Kim, Kyunghwan.

In: Journal of Korean medical science, Vol. 34, No. 20, e146, 27.05.2019.

Research output: Contribution to journalArticle

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AU - Kim, Hyun

AU - Her, Seongjin

AU - Choi, Jeong Woo

AU - Cha, Kwang Su

AU - Kim, Kyunghwan

PY - 2019/5/27

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