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A test of the adaptation theory of figure reversal Selective adaptation as a function of physical stimulus variation

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Description: Adaptation theory holds that the alternating conscious perceptions of a reversible figure arise from the interchanging dominance of cortical structures. Continuous viewing studies and selective-adaptation studies have often reported results interpreted as evidence for adaptation. The effects seen in both types of experiments have generally been attributed to the same underlying mechanism, though this had not been directly tested. The present study employed the selective-adaptation technique, manipulating stimulus characteristics in ways previously shown to influence the results of continuous viewing studies. Participants viewed unambiguous versions of a reversible figure and then reported their perception of the standard ambiguous version during the test period. Each version's figural completeness was varied, along with the duration of pre-exposure. While some support was garnered for the predictions of adaptation theory, the data also suggest mechanisms other than adaptation, and these processes may be different depending upon the choice of experimental technique and dependant measure.
Language: English
Format: Degree Work