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Abstract:
Visual input is segregated in the brain into subsystems that process different
attributes such as motion and color. At the same time, visual information is
perceptually segregated into objects and surfaces. Here we demonstrate that
perceptual segregation of visual entities based on a transparency cue precedes
and affects perceptual binding of attributes. Adding an irrelevant transparency
cue paradoxically improved the pairing of color and motion for rapidly
alternating surfaces. Subsequent experiments show: (1) Attributes are registered
over the temporal window defined by the perceptual persistence of segregation,
resulting in asynchrony in binding, and (2) attention is necessary for correct
registration of attributes in the presence of ambiguity.
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