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Integrating visual information from successive fixations: Does trans-saccadic fusion exist?

J. Jonides et al (see record 1982-22977-001) suggested that there is a level in the nervous system where a kind of photographic representation of the visual environment is constructed from "snapshots" taken by successive eye fixations. An experiment is reported in which 4 Ss were presented with half of a visual stimulus before an eye movement and the other half after an eye movement, the purpose being to determine whether the visual system can fuse the 2 halves together into a coherent whole corresponding to their true physical proximity, despite the fact that they fell on different retinal locations. The findings do not support those of Jonides et al, and an alternative explanation is put forward to explain why a person sees the environment as stable and continuous despite eye movements. The present authors suggest that mental representations of visual scenes are coded in semantic terms. (8 ref) (PsycINFO Database Record (c) 2005 APA, all rights reserved)



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