TY - JOUR
T1 - Influence of parallel and orthogonal real lines on illusory contour perception
AU - Dillenburger, Barbara
AU - Roe, Anna W.
PY - 2010/1
Y1 - 2010/1
N2 - Real lines and illusory contours (ICs) have been reported to either interfere with or facilitate the perception of the other, depending on real line orientation and contrast. Here we investigate contextual effects of real lines on illusory contour perception. Curvature discrimination thresholds of Kanizsa-contours were measured for superimposed real lines of different sub- and suprathreshold contrasts. We find that parallel lines interfere with curvature discrimination at suprathreshold, whereas orthogonal lines interfere at subthreshold contrasts. We did not find stable facilitating effects of lines in any orientation or contrast. These results are discussed in relation to existing physiological and imaging data.
AB - Real lines and illusory contours (ICs) have been reported to either interfere with or facilitate the perception of the other, depending on real line orientation and contrast. Here we investigate contextual effects of real lines on illusory contour perception. Curvature discrimination thresholds of Kanizsa-contours were measured for superimposed real lines of different sub- and suprathreshold contrasts. We find that parallel lines interfere with curvature discrimination at suprathreshold, whereas orthogonal lines interfere at subthreshold contrasts. We did not find stable facilitating effects of lines in any orientation or contrast. These results are discussed in relation to existing physiological and imaging data.
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U2 - 10.1152/jn.00001.2009
DO - 10.1152/jn.00001.2009
M3 - Article
C2 - 19864444
AN - SCOPUS:74049113732
SN - 0022-3077
VL - 103
SP - 55
EP - 64
JO - Journal of neurophysiology
JF - Journal of neurophysiology
IS - 1
ER -