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Important Note: The abstracts presented here have not yet been updated with author corrections and publisher revisions. Revised abstracts will be available soon.

ECVP2005 Abstract




In honour of Lothar Spillmann -- Filling in, emptying out, adaptation and aftereffects
      S Anstis    
Department of Psychology, UC San Diego, 9500 Gilman Drive, La Jolla CA 92093-0109, USA
  sanstis@ucsd.edu
 

During prolonged strict fixation, visual properties appear to become weaker over time. Colors become less saturated, contrast is reduced, and (we find) wiggly lines appear to become straighter, and an irregular lattice of dots appears to become gradually more regular. Also, a peripherally viewed gray patch on a red surround, or embedded in twinkling dynamic noise, seems to disappear from view after some seconds. When the adapting field is replaced by a uniform gray test field, the patch now appears to be filled-in with the red color, or with the dynamic texture, of the surround. We shall examine the short-term visual plasticity produced by this tangled mass of adaptation, aftereffects, spatial and temporal induction, and filling-in. Is the filling-in during the aftereffect analogous to filling-in of the natural blind spot? Lothar Spillmann has cast much light on these topics during his highly productive career, but I shall restore the status quo.

Support:
UCSD Senate Grant

Presentation Website:

Keywords:
adaptation
aftereffect
filling-in
plasticity

Presentation:
From perceptive fields to Gestalt. In honor of Lothar Spillmann
Talk: Thursday, 25 August 2005; 15:00-15:40

 

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