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Paper   IPM / Cognitive Sciences / 11236
School of Cognitive Sciences
  Title:   Attention during adaptation weakens negative afterimages of color-spread figures
  Author(s):  Armin Lak
  Status:   In Proceedings
  Proceeding: 12th annual meeting of Object Perception, Attention & Memory (OPAM), Nov 2004, Minneapolis, USA
  Year:  2004
  Supported by:  IPM
  Abstract:
Color-spread figure is one instance which could indicate the ability of visual system to complete fragmented surfaces. It has been reported that adaptation to these figures produce negative afterimages (Shimojo et al. 2001). Conducting two experiments, we examined the effect of voluntary attention on the perception of these afterimages. The results showed that attention during adaptation weakens the afterimage of color-spread figure. Ruling out the possibility that this weakening effect is due to faster perceptual fading of attended stimuli (Lou, 1999), we have argued that attention might prevent figure ground segmentation to interpret configuration as a color-spread figure.

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