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024 7 _ |a 10.1523/JNEUROSCI.3255-16.2017
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100 1 _ |a Kuhns, Anna
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245 _ _ |a Spatial attention, motor intention, and Bayesian cue predictability in the human brain
260 _ _ |a Washington, DC
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520 _ _ |a Predictions about upcoming events influence how we perceive and respond to our environment. There is increasing evidence that predictions may be generated based upon previous observations following Bayesian principles, but little is known about the underlying cortical mechanisms and their specificity for different cognitive subsystems. The present study aimed at identifying common and distinct neural signatures of predictive processing in the spatial attentional and motor intentional system. Twenty-three female and male healthy human volunteers performed two probabilistic cueing tasks with either spatial or motor cues while lying in the fMRI scanner. In these tasks, the percentage of cue validity changed unpredictably over time. Trialwise estimates of cue predictability were derived from a Bayesian observer model of behavioral responses. These estimates were included as parametric regressors for analyzing the BOLD time series. Parametric effects of cue predictability in valid and invalid trials were considered to reflect belief updating by precision-weighted prediction errors. The brain areas exhibiting predictability-dependent effects dissociated between the spatial attention and motor intention task, with the right temporoparietal cortex being involved during spatial attention and the left angular gyrus and anterior cingulate cortex during motor intention. Connectivity analyses revealed that all three areas showed predictability-dependent coupling with the right hippocampus. These results suggest that precision-weighted prediction errors of stimulus locations and motor responses are encoded in distinct brain regions, but that crosstalk with the hippocampus may be necessary to integrate new trialwise outcomes in both cognitive systems.
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700 1 _ |a Dombert, Pascasie Leonie
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700 1 _ |a Mengotti, Paola
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700 1 _ |a Fink, Gereon Rudolf
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700 1 _ |a Vossel, Simone
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773 _ _ |a 10.1523/JNEUROSCI.3255-16.2017
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