Assertion: known illusion | /r/HasProperty | shown by spillmann et al.
Facets:
Source sentences:
text: Explicit orientations produce motion as demonstrated in the well known Ouchi illusion (1977, first shown by Spillmann et al., 1993), where a disk-shaped inner region and an annular surround, made up from black and white rectangles oriented at right angles, produce an apparent sliding motion of the disk when the stimulus is moved or shaken.