The Influence of Visual Induction of Positive-negative Emotions on the Somatosensory Cortex

• Tanaka Keita

  School of Science and Engineering, Tokyo Denki University

• Yasuda Seijiro

  School of Science and Engineering, Tokyo Denki University

• Kuriki Shinya

  Research Institute for Science and Technology, Tokyo Denki Universiy

• Uchikawa Yoshinori

  School of Science and Engineering, Tokyo Denki University

Bibliographic Information

Other Title

• 視覚刺激による快-不快情動が体性感覚野に及ぼす影響の検討
• シカク シゲキ ニ ヨル カイ-フカイ ジョウドウ ガ タイセイ カンカクヤ ニ オヨボス エイキョウ ノ ケントウ

Abstract

To examine changes in somatosensory cortical activity associated with the processing of emotional images, we measured steady-state somatosensory evoked fields (SS-SEFs) of magnetoencephalograms (MEGs) under tactile stimulation. We used the International Affective Picture System (IAPS) which is increasingly used in brain imaging studies to examine emotional processes. Their images also allow valence to be systematically investigated. Those images, along with synchronous tactile stimuli, were randomly presented for 2.0 s using a video projector and a screen set at 120 cm in front of the subject. The tactile stimuli were applied to the tip of the right index finger. A stimulus epoch consisted of a 2.0 s period of vibration at 10-Hz or 20-Hz and a silent period of 1.0 s. At least 50 epochs were recorded for off-line averaging of the MEG signals for each condition of negative, positive, or neutral images, according to the prior categorization by each subject. The amplitude of the SS-SEF was larger for the negative impression images than for the neutral impression images (p < 0.05), suggesting that the amplitude of the SS-SEF that originated from the somatosensory cortex was modulated by the visual emotional stimuli.

Journal

• IEEJ Transactions on Electronics, Information and Systems

  IEEJ Transactions on Electronics, Information and Systems 136 (9), 1298-1304, 2016

  The Institute of Electrical Engineers of Japan

Keywords

• Emotion
• Steady state somatosensory evoked field (SS-SEF)
• Magnetoencephalogram (MEG)
• International Affective Picture System (IAPS)

Details

• CRID: 1390001204607137536
• NII Article ID: 130005262340
• NII Book ID: AN10065950
• DOI: 10.1541/ieejeiss.136.1298
• ISSN: 13488155
• ISSN: 03854221
• NDL BIB ID: 027650712
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027650712
• Web Site: https://www.jstage.jst.go.jp/article/ieejeiss/136/9/136_1298/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed