EconPapers    
Economics at your fingertips  
 

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

Liam Delaney, Kevin Denny, Caroline Rawdon, Wen Zhang and Richard A.P. Roche

No 200810, Working Papers from School of Economics, University College Dublin

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.

Keywords: Decision making; Domain-Specific discounting; Event-related potentials; Time and economic reactions; Decision making; Evoked potentials (Electrophysiology); Neural networks (Neurobiology) (search for similar items in EconPapers)
Date: 2008-04
New Economics Papers: this item is included in nep-exp, nep-lab and nep-neu
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10197/594 First version, 2008 (application/pdf)

Related works:
Working Paper: Event-Related Potentials Reveal Differential Brain Regions Implicated in Discounting in Two Tasks (2008) Downloads
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ucn:wpaper:200810

Access Statistics for this paper

More papers in Working Papers from School of Economics, University College Dublin Contact information at EDIRC.
Bibliographic data for series maintained by Nicolas Clifton ().

 
Page updated 2024-03-31
Handle: RePEc:ucn:wpaper:200810