Change search
ReferencesLink to record
Permanent link

Direct link
Event-related potential signatures of perceived and imagined emotional and food real-life photos
Stockholm University, Faculty of Social Sciences, Department of Psychology.
Show others and affiliations
Number of Authors: 7
2015 (English)In: Neuroscience Bulletin, ISSN 1673-7067, Vol. 31, no 3, 317-330 p.Article in journal (Refereed) Published
Abstract [en]

Although food and affective pictures share similar emotional and motivational characteristics, the relationship between the neuronal responses to these stimuli is unclear. Particularly, it is not known whether perceiving and imagining food and affective stimuli elicit similar event-related potential (ERP) patterns. In this study, two ERP correlates, the early posterior negativity (EPN) and the late positive potential (LPP) for perceived and imagined emotional and food photographs were investigated. Thirteen healthy volunteers were exposed to a set of food photos, as well as unpleasant, pleasant, and neutral photos from the International Affective Picture System. In each trial, participants were first asked to view a photo (perception condition), and then to create a visual mental image of it and to rate its vividness (imagery condition). The results showed that during perception, brain regions corresponding to sensorimotor and parietal motivational (defensive and appetitive) systems were activated to different extents, producing a graded pattern of EPN and LPP responses specific to the photo content - more prominent for unpleasant than pleasant and food content. Also, an EPN signature occurred in both conditions for unpleasant content, suggesting that, compared to food or pleasant content, unpleasant content may be attended to more intensely during perception and may be represented more distinctly during imagery. Finally, compared to LLP activation during perception, as well as imagery and perception of all other content, LPP activation was significantly reduced during imagery of unpleasant photos, suggesting inhibition of unwanted memories. Results are framed within a neurocognitive working model of embodied emotions.

Place, publisher, year, edition, pages
2015. Vol. 31, no 3, 317-330 p.
Keyword [en]
food, emotion, perception, mental imagery, ERP, EPN, LPP, vividness, International Affective Picture System, embodiment
National Category
Neurosciences Neurology Applied Psychology Psychology (excluding Applied Psychology)
URN: urn:nbn:se:su:diva-119058DOI: 10.1007/s12264-014-1520-6ISI: 000355619700005OAI: diva2:846398
Available from: 2015-08-17 Created: 2015-07-27 Last updated: 2015-08-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Marmolejo-Ramos, Fernando
By organisation
Department of Psychology
NeurosciencesNeurologyApplied PsychologyPsychology (excluding Applied Psychology)

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 72 hits
ReferencesLink to record
Permanent link

Direct link