Amodal completion and localization.
In a three-line vernier acuity task, a central line was localized between two aligned line segments. Accuracy did not improve when the segments formed a unified amodally completed percept. In a two-line vernier acuity task, a line was localized below a target line placed next to a physically segmented flank stimulus. Shifts in mean points of subjective equality suggested that amodally completed segments influenced localization. Previous conflicting findings are explained by a representation that is available early to influence perceived alignment. However, position tuning is poor. This representation may be realized physiologically by interpolation responses between amodally completed segments.
Greene
H H
HH
Department of Psychology, University of Detroit Mercy, MI 48219-0900, USA. greenehh@udmercy.edu
Brown
J M
JM
D000328:Adult; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D014787:Vision Tests