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- W4307991654 abstract "During natural vision the human visual system has to process upcoming eye movements in parallel to currently fixated stimuli. Saccades targeting isolated faces are known to have lower latency and higher velocity, but it is unclear how this generalizes to the natural cycle of saccades and fixations during free-viewing of complex scenes. To which degree can the visual system process high-level features of extrafoveal stimuli when they are embedded in visual clutter and compete with concurrent foveal input? Here, we investigated how free-viewing dynamics vary as a function of an upcoming fixation target, while controlling for various low-level factors. We found strong evidence that face- vs. object-directed saccades are preceded by shorter fixations and have higher peak velocity. Interestingly, the boundary conditions for these two effects are dissociated. The effect on fixation duration was limited to small saccades following the trajectory of the preceding one, early in a trial. This is reminiscent of a recently proposed model of saccade-related retinotopic shifts of attention. The effect on saccadic velocity, however, extended to very large saccades and increased with trial duration. These findings strongly suggest that multiple, independent mechanisms interact to process high-level features of extrafoveal targets and modulate the dynamics of natural vision." @default.
- W4307991654 created "2022-11-07" @default.
- W4307991654 creator A5020345741 @default.
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- W4307991654 date "2022-11-01" @default.
- W4307991654 modified "2023-10-18" @default.
- W4307991654 title "Extrafoveal faces modulate the dynamics of scene viewing" @default.
- W4307991654 doi "https://doi.org/10.31234/osf.io/utkjw" @default.
- W4307991654 hasPublicationYear "2022" @default.
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