UC Merced Proceedings of the Annual Meeting of the Cognitive Science Society Title Crossed Hands Curve Saccades: Multisensory Dynamics in Saccade Trajectories Publication Date Crossed Hands Curve Saccades: Multisensory Dynamics in Saccade Trajectories

Lauren Emberson, Rebecca Weiss, Adriano Barbosa, Lauren Emberson, Rebecca Weiss, Adriano Barbosa, Eric Vatikiotis-Bateson, Michael Spivey
2008 Proceedings of the Annual Meeting of the Cognitive Science Society   unpublished
Crossing one's hands across the midline can interfere with multisensory processing. The current experiment examines this effect in a dynamic framework. Participants were asked to saccade to visual targets in the presence of a manual tactile distraction on the same or opposite side of the target and with hands crossed or uncrossed. Trajectories of the resulting visual saccades were analyzed for curvature. While spatially incongruent trials in an uncrossed position resulted in marginal saccade
more » ... marginal saccade curvature, the crossed hand condition caused significant curvature when compared to control trials regardless of spatial configuration. Thus, the current study provides evidence that the role of sensory integration in eye movement dynamics is modulated by relative positioning of the hands. Moreover, the findings indicate that saccades can deviate in the presence of crossed-hand stimulation regardless of the spatial configuration of the trial. These results provide an initial link between known multisensory phenomena and saccade trajectories.
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