No evidence for apparent extent between parallels as the basis of the Poggendorff effect.
Day
R H
RH
Jolly
W J
WJ
Duffy
F M
FM
D005260:Female; D006801:Humans; D007088:Illusions; D008297:Male; D008960:Models, Psychological; D009903:Optical Illusions; D013028:Space Perception