权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

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

不同环境下情绪处理的生物学功能：情绪反应是后认知的吗？

基本信息

批准号：
03451016
负责人：
KIDA Mitsuro
金额：
$ 2.43万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03451016/
关键词：
ERPs Po component Hypobaric hypoxia Arousal level Heart rate Emotion 条件性情動刺激 P_3 認知機能情動機能

项目摘要

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.

认知加工可能不是处理刺激的唯一考虑因素。情绪和认知过程之间的关系已经以各种方式进行了研究。在模拟高原低压缺氧条件下，观察了情绪负荷视觉刺激诱发的事件相关脑电位（ERPs）的情绪加工特点。主要结果如下：低压缺氧，皮层唤醒水平降低，引起视觉刺激引起的负性感觉的心率显著变化。而ERP的P3成分则因任务要求的不同而表现出不同的波幅变化。当负性刺激出现在认知任务中时，P3幅值降低，而当负性刺激出现在情绪任务中时，P3幅值增加，这表明P3成分至少存在两种不同的加工过程：认知加工和情绪加工是以相互作用的方式进行的，这取决于皮层的唤醒水平。在低压缺氧期间，负面情绪过程取代了认知过程。这样的角色分享在生存方面可能具有生物学意义。