While seemingly related to novelty, this existing surprise measures distance to the previous video frame and neighboring pixels, not relative to the previous fixation. It also used hand-crafted, low-level features, not higher-level semantic features tuned for prediction across fixations. Future studies may explore alternative measures of novelty that incorporate a sequence of preceding fixations using recurrent vision models. Our measure of novelty did not take peripheral vision into account, which is known to influence foveation targets. Psychophysics research shows that integration of current peripheral vision with upcoming foveal vision is limited to attended targets. [...] Neural recordings show neurons responsive to foveal vision respond, shortly before a saccade, to the stimulus already visible in peripheral vision at the location of the upcoming fixation. Evidence for semantic processing of peripheral vision also comes from scalp recordings with neural responses to low-level features of the target prior to the upcoming fixation. Future studies should explore alternative measures of novelty that incorporate peripheral vision. Finally, we controlled for correlations between novelty and several low-level visual features, including luminance, spectrum slope and optical flow. However, any number of features, at various levels of complexity, could be used as additional controls.