Al. Cesaro et T. Agostini, THE TRAJECTORY OF A DOT CROSSING A PATTERN OF TILTED LINES IS MISPERCEIVED, Perception & psychophysics, 60(3), 1998, pp. 518-523
The straight trajectory of a dot crossing a pattern of tilted Lines is
perceived as being sinusoidal. Manipulation of the size of the angle
between the trajectory and the tilted lines, the velocity of the dot,
and the distance between the tilted Lines shows that the magnitude of
the illusion is inversely proportional to the size of the incidence an
gle, to velocity, and to the distance between the lines. The illusion
is interpreted as being the result of an integration process of local
distortions occurring at the intersections with the tilted lines.