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. 2016 Sep 5;10:169. doi: 10.3389/fnbeh.2016.00169

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Copyright © 2016 Ulrich, Keller and Grön.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Average parameters (in Hz) over models and participants for family 1 computed by Bayesian Model Averaging after identifying family 1 as the winning family using random effects Bayesian Model Selection. Parameters in black refer to endogenous connection strengths. Direct input and modulatory effects on connections are coded in different colors to represent the experimental conditions boredom (gray), flow (blue), and overload (green). Parameters highlighted in yellow were subjected to repeated measures ANOVAs to test our hypothesis that the dorsal raphe nucleus (DRN) exerted down-regulating influence on activity of the medial prefrontal cortex and/or the amygdala (AMY) in a condition-dependent manner. Whereas the modulatory effects on the medial prefrontal cortex differed significantly between boredom, flow, and overload [F(2,44) = 4.37, p = 0.019], this was not the case for the AMY [F(2,44) = 0.16, p = 0.853)]