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@ARTICLE{Michely:875000,
author = {Michely, Jochen and Viswanathan, Shivakumar and Hauser,
Tobias U. and Delker, Laura and Dolan, Raymond J. and
Grefkes, Christian},
title = {{T}he role of dopamine in dynamic effort-reward
integration},
journal = {Neuropsychopharmacology},
volume = {45},
number = {9},
issn = {0893-133X},
address = {Basingstoke},
publisher = {Nature Publishing Group84063},
reportid = {FZJ-2020-01760},
pages = {1448-1453},
year = {2020},
abstract = {When deciding to act, the neurotransmitter dopamine is
implicated in a valuation of prospective effort and reward.
However, its role in dynamic effort-reward integration
during action, a process central to everyday behaviour,
remains unclear. In a placebo-controlled, within-subject,
study, we probed the impact of increasing brain dopamine
levels (150 mg of levodopa) and blocking dopamine
receptors (1.5 mg of haloperidol) in the context of a
novel dynamic effort task in healthy human subjects. We show
that modulating homoeostatic dopamine balance distinctly
alters implicit and explicit effort allocation as a function
of instantaneous reward. Pharmacologically boosting dopamine
enhanced motor vigour, reflected in an implicit increase in
effort allocation for high rewards. Conversely,
pharmacological blockade of dopamine attenuated sensitivity
to differences in reward context, reflected in reduced
strategic effort discounting. These findings implicate
dopamine in an integration of momentary physical experience
and instantaneous reward, suggesting a key role of dopamine
in acting to maximise reward on the fly.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32268344},
UT = {WOS:000526237400001},
doi = {10.1038/s41386-020-0669-0},
url = {https://juser.fz-juelich.de/record/875000},
}