Fig. 2.

Model evidence of the DCM for different implementation settings. A smaller log Bayes factor (LBF) indicates higher model evidence, and absolute LBF <3 means no difference to the default method. After each step (a) to (c), only winning settings were forwarded to the next analysis. (A) Model evidence for canonical and individual RF (averaged across filter settings and trial depth settings). (B) Average model evidence for uni- and bi-directional filtering (only cRF, averaged across filter frequencies and trial depth settings). (C) Model evidence for different trial depth settings (only cRF and bi-directional filtering at 0.0159 Hz). (D) Model evidence with or without modelling skin conductance level (only cRF, bi-directional filtering at 0.0159 Hz and trial depth of 2).