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Scanning and form-contingent color aftereffects
S Siegel1, L G Allan, T Eissenberg
1Department of Psychology, McMaster University, Hamilton, Ontario, Canada.
Journal of Experimental Psychology. General
|March 1, 1994
Summary
The form-contingent color aftereffect persists even when participants scan induction and assessment forms. This finding indicates that scanning does not eliminate the spatiotopic contingent color aftereffects observed in visual perception studies.
Area of Science:
- Psychology
- Visual Perception
Background:
- Previous research suggested that instructing participants to scan forms would eliminate the form-contingent color aftereffect.
- The form-contingent color aftereffect, as reported by Siegel et al. (1992), is a phenomenon in visual perception.
Purpose of the Study:
- To investigate whether instructing participants to scan induction and assessment forms eliminates the form-contingent color aftereffect.
- To determine if scanning participants exhibit spatiotopic contingent color aftereffects.
Main Methods:
- Participants were instructed to scan the induction and assessment forms during the experiment.
- Aftereffects were measured in participants who engaged in scanning behavior.
Main Results:
- Participants instructed to scan the forms displayed color aftereffects comparable to those not instructed to scan.
- Scanning participants demonstrated spatiotopic contingent color aftereffects, consistent with previous findings.
Conclusions:
- The form-contingent color aftereffect is not eliminated by instructing participants to scan the forms.
- Spatiotopic contingent color aftereffects are observable even when participants actively scan visual stimuli.