Fig. 1

Note. The experimental dual eye-tracking setup in which both individuals face each other with the remote eye-tracking devices placed in the middle of the table and two cameras above each head recording the participants’ field of view (visualisation after [15]). a Example frame of the left individual’s gaze behavior on the facial features of the individual sitting opposite b and example frame for the OpenFace analysis of the right individual’s facial features c. We obtained informed consent from all displayed individuals for publishing identifiable images