Emotional Modulation of the Late Positive Potential during Picture Free Viewing in Older and Young Adults.
Where this comes from
- Record sourced from PubMed, PMID 27589393.
- Also identified by DOI 10.1371/journal.pone.0162323 and PMC identifier 5010222.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
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.
Medical subject headings
- Brain
- Emotions
- Evoked Potentials, Visual