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Related Experiment Videos

Figural aftereffects and spatial attention

S L Yeh1, I P Chen, K K De Valois

  • 1Department of Psychology, University of California, Berkeley 94720, USA.

Journal of Experimental Psychology. Human Perception and Performance
|April 1, 1996
PubMed
Summary
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Attention plays a crucial role in the figural aftereffect (FAE). Minimizing attention to the adaptation figure location significantly reduces the FAE, demonstrating attention

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • The figural aftereffect (FAE) is a visual illusion where adaptation to a displaced figure influences the perceived location of a subsequent test figure.
  • Spatial attention is known to modulate various visual processing stages, but its specific role in the FAE remains an active area of research.

Purpose of the Study:

  • To investigate how manipulating spatial attention affects the magnitude of the figural aftereffect (FAE).
  • To determine if directing attention away from the adaptation figure location can reduce or eliminate the FAE.

Main Methods:

  • Participants performed a visual alignment task following adaptation to a displaced figure.
  • Spatial attention was manipulated by requiring participants to attend to an alphanumeric sequence presented at different display locations during adaptation.

Related Experiment Videos

  • The FAE was measured under conditions of focused attention on the adaptation figure, attention directed elsewhere, and forced attention to a feature of the adaptation figure.

    • Main Results:

    • The FAE was significantly reduced when attention was directed to a central alphanumeric sequence while the adaptation figure was presented peripherally.
    • Attention directed to a superimposed alphanumeric sequence did not reduce the FAE.
    • Forcing attention to a specific feature (orientation) of the adaptation figure did not attenuate the FAE.

    Conclusions:

    • The results indicate that the magnitude of the FAE is dependent on the locus of spatial attention relative to the adaptation figure.
    • A maximum FAE requires attention to encompass the entire adaptation figure.
    • These findings highlight the critical role of spatial attention in shaping visual adaptation phenomena.