Emotional Modulation of the Late Positive Potential during Picture Free Viewing in Older and Young Adults

被引：22

作者：

Renfroe, Jenna B. ^{[1
]}

Bradley, Margaret M. ^{[1
]}

Sege, Christopher T. ^{[1
]}

Bowers, Dawn ^{[1
]}

机构：

[1] Univ Florida, Dept Clin & Hlth Psychol, Gainesville, FL 32611 USA

来源：

PLOS ONE | 2016年 / 11卷 / 09期

关键词：

EVENT-RELATED POTENTIALS; BRAIN POTENTIALS; NEGATIVITY BIAS; EVALUATIVE CATEGORIZATION; MOTIVATED ATTENTION; AROUSAL; MEMORY; AGE; PERCEPTION; RESPONSES;

D O I：

10.1371/journal.pone.0162323

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Hedonic bias during free viewing of novel emotional and neutral scenes was investigated in older adults and college students. A neurophysiological index of emotional picture processing-the amplitude of the centroparietal late positive potential (LPP)-was recorded from the scalp using a dense sensor array while participants (29 older adults; 21 college students) viewed emotionally engaging or mundane natural scenes that varied in specific content. Both students and older adults showed LPP enhancement when viewing affective, compared to neutral, scenes, and there was no difference in LPP amplitude between older individuals and college students when viewing neutral everyday scenes. However, compared to the college students, older individuals showed attenuated LPP amplitude when viewing emotional scenes, regardless of hedonic valence or specific content. Age related differences could be mediated by a reduction in reactive emotional arousal with age, possible mediated by repeated life exposure to emotional stimuli.

引用

页数：11

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