P
Peter Smittenaar
Researcher at Wellcome Trust Centre for Neuroimaging
Publications - 32
Citations - 2124
Peter Smittenaar is an academic researcher from Wellcome Trust Centre for Neuroimaging. The author has contributed to research in topics: Population & Dopaminergic. The author has an hindex of 17, co-authored 31 publications receiving 1554 citations. Previous affiliations of Peter Smittenaar include Radboud University Nijmegen & University College London.
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Journal ArticleDOI
Dopamine Enhances Model-Based over Model-Free Choice Behavior
TL;DR: The effect of a dopamine manipulation on the degree to which either system contributes to instrumental behavior in a two-stage Markov decision task, which has been shown to discriminate model-free from model-based control, is investigated.
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Widespread age-related differences in the human brain microstructure revealed by quantitative magnetic resonance imaging
Martina F. Callaghan,Patrick Freund,Patrick Freund,Patrick Freund,Bogdan Draganski,Elaine J. Anderson,Marinella Cappelletti,Marinella Cappelletti,Rumana Chowdhury,Joern Diedrichsen,Thomas H. B. FitzGerald,Peter Smittenaar,Gunther Helms,Antoine Lutti,Nikolaus Weiskopf +14 more
TL;DR: This study aims to characterize the spatial pattern and age-related differences of biologically relevant measures in vivo over the course of normal aging and build a quantitative baseline from which to examine and draw a dividing line between healthy aging and pathologic neurodegeneration.
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Randomized controlled trial of a 12-week digital care program in improving low back pain
Raad Shebib,Jeannie F. Bailey,Peter Smittenaar,Daniel A Perez,Gabriel Mecklenburg,Simon Hunter +5 more
TL;DR: In conclusion, the DCP resulted in improved LBP outcomes compared to treatment-as-usual and has potential to scale personalized evidence-based non-invasive treatment for LBP patients.
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Disruption of Dorsolateral Prefrontal Cortex Decreases Model-Based in Favor of Model-free Control in Humans
Peter Smittenaar,Thomas H. B. FitzGerald,Vincenzo Romei,Vincenzo Romei,Nicholas D. Wright,Raymond J. Dolan +5 more
TL;DR: It is shown it is possible to shift the balance of control between these systems by disruption of right dorsolateral prefrontal cortex, such that participants manifest a dominance of the less optimal model-free control.
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Adaptive integration of habits into depth-limited planning defines a habitual-goal-directed spectrum.
TL;DR: It is found that increasing time pressure led to shallower goal-directed planning, suggesting that a speed-accuracy tradeoff controls the depth of planning with deeper search leading to more accurate evaluation, at the cost of slower decision-making.