… We address this question using the tilt aftereffect (TAE), a misperception in orientation following
prior viewing of an oriented stimulus. The TAE and related tilt illusion (TI) have both been …

… of luminance discontinuity. Inspection with one type of edge, in fact, yields tilt aftereffects
when the other class of edge is used as the test figure. The present study considers whether …

… tilt aftereffects as a function of the intensity of the adapting pattern. Three subjects completed
the tests with two illusory and two luminance … The illusory contours appear as surface edges…

… of the aftereffect tilted as S tilted … aftereffect does not affect orthogonal edges. Pantle and
Sekulerv found that adaptation to a set of horizontal bars moving vertically raised the luminance …

… as the test figure are signaled via vertical edge detectors sensitive to the complementary
color. A … spatial aftereffects. In this case, the tilt aftereffect, in which a vertical line appears tilted …

… but not illusory contours, and there are additional mechanisms (complex cells), some of
which respond to both contour types and others that respond only to luminance edges. …

… Subjective or illusory contours are lines or edges perceived where there is no luminance or
color discontinuity. Although they have been studied extensively, fundamental issues remain …

… have edges defined by properties other than luminance and … at the orientation of the perceived
edge [yon der Heydt, R. & … are subject to tilt aftereffects following prolonged viewing of an …

… apparatus used for measuring the tilt aftereffect. The test and … , had a sinusoidal luminance
profile and could be separately … 3” to the right of the nearest edge of the test figure. The test …

… edges defined in terms of luminance discontinuity (real … with edges defined in terms of
luminance discontinuity. Inspection of one class of contour was in fact found to yield a tilt aftereffect …