Fig 1. Initial fixation locations and example facial expressions used.

(A) An example face image used in the experiments (from the [45] database), overlaid, for illustrative purposes, with red (dark grey) crosses to mark the possible enforced fixation locations. (B) Example images of each expression used in Experiment 1 (left to right: anger, fear, surprise, sadness). The face images are republished in slightly adapted form from the Radboud Faces Database [45] under a CC BY license, with permission from Dr Gijsbert Bijlstra, Radboud University.