A perceived spatial frequency shift at orientations orthogonal to adapting gratings.
D000221:Adaptation, Ocular; D000328:Adult; D005366:Figural Aftereffect; D005556:Form Perception / Q000502:physiology; D006801:Humans; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D012684:Sensory Thresholds; D013997:Time Factors