Fixation durations in natural scene viewing are guided by peripheral scene content.

ABSTRACT: Fixation durations provide insights into processing demands. We investigated factors controlling fixation durations during scene viewing in two experiments. In Experiment 1, we tested the degree to which fixation durations adapt to global scene processing difficulty by manipulating the contrast (from original contrast to isoluminant) and saturation (original vs. grayscale) of the entire scene. We observed longer fixation durations for lower levels of contrast, and longer fixation durations for grayscale than for color scenes. Thus fixation durations were globally slowed as visual information became more and more degraded, making scene processing increasingly more difficult. In Experiment 2, we investigated two possible sources for this slow-down. We used "checkerboard" stimuli in which unm

SUBMITTER: Einhauser W 

PROVIDER: S-EPMC7405803 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature