Evidence for curvilinear interpolation from dot alignment judgements

• Published in: Vision research (Oxford) Vol. 39; no. 26; pp. 4378 - 4392
• Main Authors: van Assen, Marcel A, Vos, Piet G
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.1999; Elsevier Science
• Subjects: Biological and medical sciences; Contour perception; Form Perception - physiology; Fundamental and applied biological sciences. Psychology; Good continuation; Humans; Judgment; Orientation; Pattern Recognition, Visual - physiology; Perception; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Space life sciences; Vision; Visual interpolation; Visual Perception - physiology; Visual interpolation; Contour perception; Good continuation; Human; Interpolation; Visual stimulus; Contour; Vision; Curve; Perception; Experimental study
• ISSN: 0042-6989; 1878-5646
• DOI: 10.1016/S0042-6989(99)00150-9

Visual interpolation between dots responsible for rectilinear versus curvilinear contour interpretation was examined with the psychophysical forced directional response (FDR) paradigm. Regular four-dot polygon segments, together with a target dot, were presented to the subjects for 150 ms. Subjects were required to indicate the direction of deviation of the target dot from the midpoint of the intermediate line segment. Crucial variables were the outer angle of the line segments and symmetry axis orientation of the polygon segment. Logistic regression analyses showed that curvilinear interpolation occurred for angles up to 30°, but emerged more pervasively under the vertical symmetry axis orientation for angles up to 60°.