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Reward networks in the brain as captured by connectivity measures

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An assortment of human behaviors is thought to be driven by rewards including reinforcement learning, novelty processing, learning, decision making, economic choice, incentive motivation, and addiction. In each case the ventral tegmental area/ventral striatum (nucleus accumbens) (VTA
VS) system has been implicated as a key structure by functional imaging studies, mostly on the basis of standard, univariate analyses. Here we propose that standard functional magnetic resonance imaging analysis needs to be complemented by methods that take into account the differential connectivity of the VTA
VS system in the different behavioral contexts in order to describe reward based processes more appropriately. We ﬁ rst consider the wider network for reward processing as it emerged from animal experimentation. Subsequently, an example for a method to assess functional connectivity is given. Finally, we illustrate the usefulness of such analyses by examples regarding reward valuation, reward expectation and the role of reward in addiction.

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Frontiers in Neuroscience, 2009, vol. 3, num. 3, p. 350-362

# metadata.dc.rights[].value
cc-by (c) Camara Mancha, Estela et al., 2009

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Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació)

# metadata.dc.title[].value
Reward networks in the brain as captured by connectivity measures