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  Learning relative values in the striatum induces violations of normative decision making

Klein, T. A., Ullsperger, M., & Jocham, G. (2017). Learning relative values in the striatum induces violations of normative decision making. Nature Communications, 8: 16033. doi:10.1038/ncomms16033.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-E140-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1664-2
Genre: Journal Article

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 Creators:
Klein, Tilmann A. 1, 2, Author
Ullsperger, Markus1, 3, Author              
Jocham, Gerhard 1, 4, Author
Affiliations:
1Center for Behavioral Brain Sciences, Magdeburg, Germany, ou_persistent22              
2Institute of Psychology, Otto von Guericke University Magdeburg, Germany, ou_persistent22              
3Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634549              
4Clinic for Cognitive Neurology, University of Leipzig, Germany, ou_persistent22              

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 Abstract: To decide optimally between available options, organisms need to learn the values associated with these options. Reinforcement learning models offer a powerful explanation of how these values are learnt from experience. However, human choices often violate normative principles. We suggest that seemingly counterintuitive decisions may arise as a natural consequence of the learning mechanisms deployed by humans. Here, using fMRI and a novel behavioural task, we show that, when suddenly switched to novel choice contexts, participants’ choices are incongruent with values learnt by standard learning algorithms. Instead, behaviour is compatible with the decisions of an agent learning how good an option is relative to an option with which it had previously been paired. Striatal activity exhibits the characteristics of a prediction error used to update such relative option values. Our data suggest that choices can be biased by a tendency to learn option values with reference to the available alternatives.

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Language(s): eng - English
 Dates: 2016-05-242017-05-182017-06-20
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/ncomms16033
PMID: 28631734
PMC: PMC5481835
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Funding organization : Federal State of Saxony Anhalt
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Funding program : European Regional Development Fund
Funding organization : European Commission (EC)
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Grant ID : ZS/2016/04/78113
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Funding organization : Center for Behavioral Brain Sciences (CBBS)
Project name : Neurobiologie motivierten Verhaltens / SFB 779
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Funding program : -
Funding organization : Deutsche Forschungsgemeinschaft (DFG)

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 8 Sequence Number: 16033 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723