Optical Illusions and Unconscious Inference

Certain optical illusions are instances of unconscious inference:

Example by Helmholtz: sun going down behind a stationary horizon (sun is fixed; horizon moves)

**Figure 3:** Cafe wall: a distorting illusion with parallel horizontal lines
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``Music 175: Cognitive Psychology and Music'' by Tamara Smyth, Department of Music, University of California, San Diego (UCSD).

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Copyright © 2019-04-30 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>