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Altruism costs-the cheap signal from amygdala
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis. KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS.
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2014 (English)In: Social Cognitive & Affective Neuroscience, ISSN 1749-5016, E-ISSN 1749-5024, Vol. 9, no 9, 1325-1332 p.Article in journal (Refereed) Published
Abstract [en]

When people state their willingness to pay for something, the amount usually differs from the behavior in a real purchase situation. The discrepancy between a hypothetical answer and the real act is called hypothetical bias. We investigated neural processes of hypothetical bias regarding monetary donations to public goods using fMRI with the hypothesis that amygdala codes for real costs. Real decisions activated amygdala more than hypothetical decisions. This was observed for both accepted and rejected proposals. The more the subjects accepted real donation proposals the greater was the activity in rostral anterior cingulate cortex-a region known to control amygdala but also neural processing of the cost-benefit difference. The presentation of a charitable donation goal evoked an insula activity that predicted the later decision to donate. In conclusion, we have identified the neural mechanisms underlying real donation behavior, compatible with theories on hypothetical bias. Our findings imply that the emotional system has an important role in real decision making as it signals what kind of immediate cost and reward an outcome is associated with.

Place, publisher, year, edition, pages
2014. Vol. 9, no 9, 1325-1332 p.
Keyword [en]
amygdala, decision making, fMRI, hypothetical bias
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:kth:diva-138227DOI: 10.1093/scan/nst118ISI: 000342985600010PubMedID: 23945997Scopus ID: 2-s2.0-84928708945OAI: oai:DiVA.org:kth-138227DiVA: diva2:680629
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QC 20141113

Available from: 2013-12-18 Created: 2013-12-18 Last updated: 2017-12-06Bibliographically approved

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Karlström, Anders

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Transport and Location AnalysisCentre for Transport Studies, CTS
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf