In this study, we use separate eye-tracking measurements and functional magnetic resonance imaging to investigate the neuronal and behavioral response to painted portraits with direct versus averted gaze. We further explored modulatory effects of several painting characteristics (premodern vs modern period, influence of style and pictorial context). In the fMRI experiment, we show that the direct versus averted gaze elicited increased activation in lingual and inferior occipital and the fusiform face area, as well as in several areas involved in attentional and social cognitive processes, especially the theory of mind: angular gyrus/temporo-parietal junction, inferior frontal gyrus and dorsolateral prefrontal cortex. The additional eye-tracking experiment showed that participants spent more time viewing the portrait's eyes and mouth when the portrait's gaze was directed towards the observer. These results suggest that static and, in some cases, highly stylized depictions of human beings in artistic portraits elicit brain activation commensurate with the experience of being observed by a watchful intelligent being. They thus involve observers in implicit inferences of the painted subject's mental states and emotions. We further confirm the substantial influence of representational medium on brain activity.

National Institute of Mental Health Topolová 748 250 67 Klecany Czech Republic

National Institute of Mental Health Topolová 748 250 67 Klecany Czech Republic; Department of Art History Masaryk University Brno Arne Nováka 1 602 00 Czech Republic

National Institute of Mental Health Topolová 748 250 67 Klecany Czech Republic; Institute of Clinical and Experimental Medicine Vídeňská 1958 9 140 21 Prague Czech Republic

National Institute of Mental Health Topolová 748 250 67 Klecany Czech Republic; Institute of Psychology Czech Academy of Sciences Hybernská 8 110 00 Prague Czech Republic

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How Neuroimaging Can Aid the Interpretation of Art