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J Vis. 2013 Aug 20;13(10). pii: 12. doi: 10.1167/13.10.12.

Long-lasting visual integration of form, motion, and color as revealed by visual masking.

Author information

1
Department of Psychology, University of Aberdeen, Aberdeen, Scotland, UK. k.s.pilz@abdn.ac.uk

Abstract

When two similar visual stimuli are presented in rapid succession at the same location, they fuse. For example, a red and a green disk are perceived as one single yellow disk. Likewise, verniers with opposite offset directions are perceived as one vernier with an almost aligned vernier offset. In fusion, observers have no conscious access to the individual stimuli. Using transcranial magnetic stimulation (TMS), it has been shown that feature fusion for verniers can be modulated for about 400 ms in that either the first or the second vernier dominates the percept, depending on TMS onset. Here, we use light masks to modulate feature fusion for verniers, motion, and color. Our results are similar to the TMS experiment and show that individual visual features are stored for a substantial amount of time before they are integrated.

KEYWORDS:

color; feature fusion; form; light masks; motion

PMID:
23962737
DOI:
10.1167/13.10.12
[Indexed for MEDLINE]

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