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- W4309735723 abstract "Abstract Visual perception is limited by spatial resolution, the ability to discriminate fine details. Spatial resolution not only declines with eccentricity but also differs for polar angle locations around the visual field, also known as ‘performance fields'. To compensate for poor peripheral resolution, we make rapid eye movements –saccades– to bring peripheral objects into high-acuity foveal vision. Already before saccade onset, visual attention shifts to the saccade target location and prioritizes visual processing. This presaccadic shift of attention improves performance in many visual tasks, but whether it changes resolution is unknown. Here, we investigated whether presaccadic attention sharpens peripheral spatial resolution; and if so, whether such effect interacts with performance fields asymmetries. We measured acuity thresholds in an orientation discrimination task during fixation and saccade preparation around the visual field. The results revealed that presaccadic attention sharpens acuity, which can facilitate a smooth transition from peripheral to foveal representation. This acuity enhancement is similar across the four cardinal locations; thus, the typically robust effect of presaccadic attention does not change polar angle differences in resolution." @default.
- W4309735723 created "2022-11-29" @default.
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- W4309735723 date "2022-11-22" @default.
- W4309735723 modified "2023-10-18" @default.
- W4309735723 title "Presaccadic attention sharpens visual acuity" @default.
- W4309735723 doi "https://doi.org/10.21203/rs.3.rs-2278347/v1" @default.
- W4309735723 hasPublicationYear "2022" @default.
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