Brain regions showing stronger activation as a function of increased vividness of imagery that are also specifically activated during motor imagery.

<p>MNI coordinates, FWE-corrected, <i>p</i><.05.</p

Brain regions identified when weighting all parameter estimates of the different imagery conditions equally.

<p>MNI coordinates, FWE-corrected, <i>p</i><.05.</p

Brain regions identified when weighting all parameter estimates of the different imagery conditions equally and depicting significant activations for each condition.

<p>ROI analysis, FWE-corrected, <i>p</i><.05.</p

Mean increase of the BOLD response associated with increased imagery vividness (A).

<p>Brain areas showing increased activation during motor imagery and as a function of imagery vividness (B).</p

Brain regions showing stronger activation as a function of increased vividness of imagery based on calculating a parametric modulation (<i>q</i><.05, FDR-corrected).

<p>MNI coordinates, FDR-corrected, <i>q</i>(FDR) <.05, cluster size >10.</p

Brain regions showing stronger activation as a function of decreased vividness of imagery based on calculating a parametric modulation (<i>q</i><.05, FDR-corrected).

<p>MNI coordinates, FDR-corrected, <i>q</i>(FDR) <.05, cluster size >10.</p

Mean vividness rating score and standard errors depicted for each condition (1: No spatial accuracy, object, 10 repetitions; 2: No spatial accuracy, object, 20 repetitions; 3: No spatial accuracy, no object, 10 repetitions; 4: No spatial accuracy, no object, 20 repetitions; 5: Low spatial accuracy, object, 10 repetitions; 6: Low spatial accuracy, object, 20 repetitions; 7: Low spatial accuracy, no object, 10 repetitions; 8: Low spatial accuracy, no object, 20 repetitions; 9: High spatial accuracy, object, 10 repetitions; 10: High spatial accuracy, object, 20 repetitions; 11: High spatial accuracy, no object, 10 repetitions; 12: High spatial accuracy, no object, 20 repetitions.

<p>Mean vividness rating score and standard errors depicted for each condition (1: No spatial accuracy, object, 10 repetitions; 2: No spatial accuracy, object, 20 repetitions; 3: No spatial accuracy, no object, 10 repetitions; 4: No spatial accuracy, no object, 20 repetitions; 5: Low spatial accuracy, object, 10 repetitions; 6: Low spatial accuracy, object, 20 repetitions; 7: Low spatial accuracy, no object, 10 repetitions; 8: Low spatial accuracy, no object, 20 repetitions; 9: High spatial accuracy, object, 10 repetitions; 10: High spatial accuracy, object, 20 repetitions; 11: High spatial accuracy, no object, 10 repetitions; 12: High spatial accuracy, no object, 20 repetitions.</p

Statistical Data of Valence×Social Context×Difficulty Repeated-measures ANOVA for Valence and Confidence Rating.

<p><i>Note.</i> ANOVA = Analysis of variance.</p>*<p><i>p</i><.05.</p

Rating confidence correlates with the alexithymia score.

<p>Linear fit for rating confidence and alexithymia (negative and positive videos).</p

Preparation of stimuli.

<p>To create the point-light displays, 13 reflective markers were attached to an actor's head, shoulders, elbows, wrists, hips, knees, and ankles. They were then tracked using a Vicon motion-capture system. (A) Photograph of actors with 13 markers attached to the body and the corresponding point-light figures. (B) Examples of dyadic and monadic point-light displays. (C) Temporal structure of the experiment.</p