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Summary: Hiding graphic updates during long saccadic
suppression periods
R. Herpers1,2
, J. Schumacher1,2
, R. S. Allison1
1
Centre for Vision Research, Department of Computer Science and Engineering,
York University, Toronto, Canada
2
Department of Computer Science, Bonn-Rhein-Sieg University of Applied Sciences,
Sankt Augustin, Germany, [herpers, allison]@cs.yorku.ca
Abstract. During visual exploration of a scene human beings can be insensitive
to even large changes in the scene when the eye is executing rapid or saccadic
eye movements. In this contribution, this period of saccadic suppression was
exploited to hide graphics updates in immersive environments. Two experi-
ments were conducted. In the first experiment the general sensitivity of observ-
ers to trans-saccadic translations of large images of complex natural scenes was
studied. It was found that trans-saccadic changes of up to 1.2 degrees of visual
angle were seldom noticed during saccades with duration of at least 66 ms. In
the second experiment, the perceived magnitude of trans-saccadic translation
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