Context effects on smooth pursuit and manual interception of a disappearing target

Journal of Neurophysiology
Philipp KreyenmeierMiriam Spering

Abstract

In our natural environment, we interact with moving objects that are surrounded by richly textured, dynamic visual contexts. Yet most laboratory studies on vision and movement show visual objects in front of uniform gray backgrounds. Context effects on eye movements have been widely studied, but it is less well known how visual contexts affect hand movements. Here we ask whether eye and hand movements integrate motion signals from target and context similarly or differently, and whether context effects on eye and hand change over time. We developed a track-intercept task requiring participants to track the initial launch of a moving object ("ball") with smooth pursuit eye movements. The ball disappeared after a brief presentation, and participants had to intercept it in a designated "hit zone." In two experiments (n = 18 human observers each), the ball was shown in front of a uniform or a textured background that either was stationary or moved along with the target. Eye and hand movement latencies and speeds were similarly affected by the visual context, but eye and hand interception (eye position at time of interception, and hand interception timing error) did not differ significantly between context conditions. Eye and hand i...Continue Reading

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Citations

May 12, 2019·The European Journal of Neuroscience·Brian J WhiteDouglas P Munoz
Oct 3, 2019·Scientific Reports·Björn Jörges, Joan López-Moliner
Mar 21, 2021·Vision Research·Jolande FookenMiriam Spering
Sep 5, 2021·Experimental Brain Research·Anna SchroegerRouwen Cañal-Bruland

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