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1992 Fiscal Year Final Research Report Summary

Biological functions of emotional processings under various environments: Is an emotional reaction postcognitive?

Research Project

Project/Area Number 03451016
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Psychology
Research InstitutionNagoya University

Principal Investigator

KIDA Mitsuro  Nagoya University Research Institute of Environmental Medicine, Associate Professor, 環境医学研究所, 助教授 (80023654)

Co-Investigator(Kenkyū-buntansha) KOGA Kazuo  Nagoya University, Research Institute of Environmental Medicine, Associate Profe, 環境医学研究所, 助教授 (30089099)
Project Period (FY) 1991 – 1992
KeywordsERPs / Po component / Hypobaric hypoxia / Arousal level / Heart rate / Emotion
Research Abstract

Cognitive processings may not be the only consideration in processing a stimulus. The relationship between emotional and cognitive processings have been investigated in various manners. The characteristics of emotional processings were observed in event- related brain potentials (ERPs) when evoked by emotionally loaded visual stimuli under hypobaric hypoxia of simulated high altitudes. Main results were as follows:
Hypobaric hypoxia, decreasing in the level of cortical arousal, produced marked changes in heart rate for visual stimuli evoking negative feeling. While the P3 component of ERPs showed different changes in the amplitude depending on task requirements. The P3 magnitude decreased when the negative stimulus was presented during a cognitive task, conversely it increased when the identical stimulus was presented during a emotional task.
These findings suggest that there are at least two different processes underlying the P3 component: cognitive and emotional processings operate in a reciprocal manner depending on the level of cortical arousal. During hypobaric hypoxia a negative emotional process replaces cognitive one. Such role-sharing may be biologically meaningful in terms of survival.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 木田 光郎: "低圧低酸素環境下における視覚性情動刺激の感受性の昂進:心拍(R-R間隔)の変化と事象関連電位の変化から" 環境医学研究所年報. 43. 88-92 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kida,M.: "Cognitive performance and event-related brain potentials under simulated high altitudes." Journal of Applied Physiology. 74. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mitsuro Kida: "Changes in event-related potentials and heart rate to affective visual stimuli under hypobaric hypoxia of a simulated high altitudes." Annals of the Research Institute of Environmental Medicine. 43. 88-92 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mitsuro Kida: "Cognitive performance and event-related brain potentials under simulated high altitudes." Journal of Applied Physiology. 74. (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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