Event-related potentials reveal differential brain regions implicated in discounting in two tasks

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dc.contributor.author Delaney, Liam
dc.contributor.author Denny, Kevin
dc.contributor.author Rawdon, Caroline
dc.contributor.author Zhang, Wen
dc.contributor.author Roche, Richard A.P.
dc.date.accessioned 2008-10-20T15:50:13Z
dc.date.available 2008-10-20T15:50:13Z
dc.date.copyright 2008 Geary Institute en
dc.date.issued 2008-04-17
dc.identifier.other 200810 en
dc.identifier.uri http://hdl.handle.net/10197/594
dc.description.abstract The way people make decisions about future benefits – termed discounting - has important implications for both financial planning and health behaviour. Several theories assume that, when delaying gratification, the lower weight given to future benefits (the discount rate) declines exponentially. However there is considerable evidence that it declines hyperbolically with the rate of discount being proportionate to the delay distance. There is relatively little evidence as to whether neural areas mediating time dependent discounting processes differ according to the nature of the task. The present study investigates the potential neurological mechanisms underpinning domain-specific discounting processes. We present high-density event-related potentials (ERPs) data from a task in which participants were asked to make decisions about financial rewards or their health over short and long time-horizons. Participants (n=17) made a button-press response to their preference for an immediate or delayed gain (in the case of finance) or loss (in the case of health), with the discrepancy in the size of benefits/losses varying between alternatives. Waveform components elicited during the task were similar for both domains and included posterior N1, frontal P2 and posterior P3 components. We provide source dipole evidence that differential brain activation does occur across domains with results suggesting the possible involvement of the right cingulate gyrus and left claustrum for the health domain and the left medial and right superior frontal gyri for the finance domain. However, little evidence for differential activation across time horizons is found. en
dc.format.extent 4304 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher University College Dublin. Geary Institute en
dc.relation.ispartofseries UCD Geary Institute Discussion Paper Series en
dc.relation.ispartofseries WP/11/2008 en
dc.relation.ispartofseries UCD Centre for Economic Research Working Paper Series
dc.relation.ispartofseries WP08/10
dc.subject Decision making en
dc.subject Domain-Specific discounting en
dc.subject Event-related potentials en
dc.subject.lcsh Time and economic reactions en
dc.subject.lcsh Decision making en
dc.subject.lcsh Evoked potentials (Electrophysiology) en
dc.subject.lcsh Neural networks (Neurobiology)
dc.title Event-related potentials reveal differential brain regions implicated in discounting in two tasks en
dc.type Working Paper en
dc.internal.authorurl Liam Delaney (web page) en
dc.internal.authorurl http://www.ucd.ie/economics/staff/ldelaney/ldelaney.htm en
dc.internal.authorurl Kevin Denny (web page) en
dc.internal.authorurl http://www.ucd.ie/economic/staff/kdenny/kdenny.html en
dc.internal.authorcontactother Liam Delaney - Email: Liam.Delaney@ucd.ie; Tel: 353-1-7164613 en
dc.internal.authorcontactother Kevin Denny - Email: kevin.denny@ucd.ie; Tel: +353 1 716 4632 en
dc.internal.authorid UCD0004 en
dc.internal.authorid UCD0005 en
dc.internal.availability Full text available en
dc.internal.webversions http://geary.ucd.ie/images/Publications/WorkingPapers/gearywp200811.pdf en
dc.status Not peer reviewed en
dc.neeo.contributor Delaney|Liam|aut|UCD0004
dc.neeo.contributor Denny|Kevin|aut|UCD0005
dc.neeo.contributor Rawdon|Caroline|aut|
dc.neeo.contributor Roche|Richard A.P.|aut|
dc.neeo.contributor Zhang|Wen|aut|

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