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  Distributed representations of rule identity and rule order in human frontal cortex and striatum

Reverberi, C., Görgen, K., & Haynes, J.-D. (2012). Distributed representations of rule identity and rule order in human frontal cortex and striatum. The Journal of Neuroscience, 32(48), 17420-17430. doi:10.1523/JNEUROSCI.2344-12.2012.

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 Urheber:
Reverberi, Carlo1, 2, Autor
Görgen, Kai1, Autor
Haynes, John-Dylan1, 3, Autor           
Affiliations:
1Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
2University of Milano–Bicocca, Milan, Italy, ou_persistent22              
3MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634548              

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 Zusammenfassung: Humans are able to flexibly devise and implement rules to reach their desired goals. For simple situations, we can use single rules, such as “if traffic light is green then cross the street.” In most cases, however, more complex rule sets are required, involving the integration of multiple layers of control. Although it has been shown that prefrontal cortex is important for rule representation, it has remained unclear how the brain encodes more complex rule sets. Here, we investigate how the brain represents the order in which different parts of a rule set are evaluated. Participants had to follow compound rule sets that involved the concurrent application of two single rules in a specific order, where one of the rules always had to be evaluated first. The rules and their assigned order were independently manipulated. By applying multivariate decoding to fMRI data, we found that the identity of the current rule was encoded in a frontostriatal network involving right ventrolateral prefrontal cortex, right superior frontal gyrus, and dorsal striatum. In contrast, rule order could be decoded in the dorsal striatum and in the right premotor cortex. The nonhomogeneous distribution of information across brain areas was confirmed by follow-up analyses focused on relevant regions of interest. We argue that the brain encodes complex rule sets by “decomposing” them in their constituent features, which are represented in different brain areas, according to the aspect of information to be maintained.

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Sprache(n): eng - English
 Datum: 2012-09-232012-11-28
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1523/JNEUROSCI.2344-12.2012
PMID: 23197733
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Titel: The Journal of Neuroscience
  Andere : J. Neurosci.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Baltimore, MD : The Society
Seiten: - Band / Heft: 32 (48) Artikelnummer: - Start- / Endseite: 17420 - 17430 Identifikator: ISSN: 0270-6474
CoNE: https://pure.mpg.de/cone/journals/resource/954925502187