Kennedy J M, 1981, "Illusory brightness and the ends of petals: change in brightness without aid of stratification or assimilation effects" Perception 10(5) 583 – 585
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Illusory brightness and the ends of petals: change in brightness without aid of stratification or assimilation effects
John M Kennedy
Received 28 November 1980, in revised form 15 April 1981
Abstract. A series of petals arrayed around a central region induces an illusory brightness effect that is systematically related to the angle formed by the petals and the perimeter of the illusory brightness. As the petals veer to become tangents the illusory brightness decreases. The effect is not contingent on illusory stratification, or assimilation between the petals.
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