Apparent Motion from Outside the Visual Field, Retinotopic Cortices May Register Extra-Retinal Positions
Abstract
Observers made a saccade between two fixation markers while a probe was flashed sequentially at two locations on a side screen. The first probe was presented in the far periphery just within the observer's visual field. This target was extinguished and the observers made a large saccade away from the probe, which would have left it far outside the visual field if it had still been present. The second probe was then presented, displaced from the first in the same direction as the eye movement and by about the same distance as the saccade step. Because both eyes and probes shifted by similar amounts, there was little or no shift between the first and second probe positions on the retina. Nevertheless, subjects reported seeing motion corresponding to the spatial displacement not the retinal displacement. When the second probe was presented, the effective location of the first probe lay outside the visual field demonstrating that apparent motion can be seen from a location outside the visual field to a second location inside the visual field. Recent physiological results suggest that target locations are ''remapped'' on retinotopic representations to correct for the effects of eye movements. Our results suggest that the representations on which this remapping occurs include locations that fall beyond the limits of the retina.
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BibTeX
@article{szinte2026apparent,
title = {{Apparent Motion from Outside the Visual Field, Retinotopic Cortices May Register Extra-Retinal Positions}},
author = {Martin Szinte and Patrick Cavanagh},
journal = {PLoS ONE},
year = {2026},
month = sep,
doi = {10.1371/journal.pone.0047386},
url = {https://hal.science/hal-05750530v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Apparent Motion from Outside the Visual Field, Retinotopic Cortices May Register Extra-Retinal Positions
AU - Martin Szinte
AU - Patrick Cavanagh
PY - 2026
DA - 2026/09/15
JO - PLoS ONE
DO - 10.1371/journal.pone.0047386
UR - https://hal.science/hal-05750530v1
AB - Observers made a saccade between two fixation markers while a probe was flashed sequentially at two locations on a side screen. The first probe was presented in the far periphery just within the observer's visual field. This target was extinguished and the observers made a large saccade away from the probe, which would have left it far outside the visual field if it had still been present. The second probe was then presented, displaced from the first in the same direction as the eye movement and by about the same distance as the saccade step. Because both eyes and probes shifted by similar amounts, there was little or no shift between the first and second probe positions on the retina. Nevertheless, subjects reported seeing motion corresponding to the spatial displacement not the retinal displacement. When the second probe was presented, the effective location of the first probe lay outside the visual field demonstrating that apparent motion can be seen from a location outside the visual field to a second location inside the visual field. Recent physiological results suggest that target locations are ''remapped'' on retinotopic representations to correct for the effects of eye movements. Our results suggest that the representations on which this remapping occurs include locations that fall beyond the limits of the retina.
SN - 1932-6203
SN - 1932-6203
ER -