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Berkeley, Helmholtz, the moon illusion, and two visual systems

Published online by Cambridge University Press:  23 January 2003

Helen E. Ross
Helen E. Ross
Affiliation:
Department of Psychology, University of Stirling, Stirling FK9 4LA, Scotlandh.e.ross@stir.ac.uk http://www.stir.ac.uk/psychology/staff/her1
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Abstract

Berkeley and Helmholtz proposed different indirect mechanisms for size perception: Berkeley, that size was conditioned to various cues, independently of perceived distance; Helmholtz, that it was unconsciously calculated from angular size and perceived distance. The geometrical approach cannot explain size-distance paradoxes (e.g., moon illusion). The dorsal/ventral solution is dubious for close displays and untestable for far displays.

Type
Brief Report
Information
Behavioral and Brain Sciences , Volume 25 , Issue 1 , February 2002 , pp. 116 - 117
Copyright
© 2002 Cambridge University Press

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