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Presaccadic Motion Integration Between Current and Future Retinotopic Locations of Attended Objects

Overview
Journal J Neurophysiol
Specialties Neurology
Physiology
Date 2016 Jul 8
PMID 27385792
Citations 13
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Abstract

Object tracking across eye movements is thought to rely on presaccadic updating of attention between the object's current and its "remapped" location (i.e., the postsaccadic retinotopic location). We report evidence for a bifocal, presaccadic sampling between these two positions. While preparing a saccade, participants viewed four spatially separated random dot kinematograms, one of which was cued by a colored flash. They reported the direction of a coherent motion signal at the cued location while a second signal occurred simultaneously either at the cue's remapped location or at one of several control locations. Motion integration between the signals occurred only when the two motion signals were congruent and were shown at the cue and at its remapped location. This shows that the visual system integrates features between both the current and the future retinotopic locations of an attended object and that such presaccadic sampling is feature specific.

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