TY - JOUR
T1 - The representation of moving 3-D objects in apparent motion perception
AU - Hidaka, Souta
AU - Kawachi, Yousuke
AU - Gyoba, Jiro
N1 - Funding Information:
This research was supported by a Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists to S.H. (No. 19004400) and Y.K. (No. 19005654), and by a Grant-in-Aid for Scientific Research to J.G. (Nos. 18330151 and 19001004).
PY - 2009/8
Y1 - 2009/8
N2 - In the present research, we investigated the depth information contained in the representations of apparently moving 3-D objects. By conducting three experiments, we measured the magnitude of representational momentum (RM) as an index of the consistency of an object's representation. Experiment 1A revealed that RM magnitude was greater when shaded, convex, apparently moving objects shifted to a flat circle than when they shifted to a shaded, concave, hemisphere. The difference diminished when the apparently moving objects were concave hemispheres (Experiment 1B). Using luminance-polarized circles, Experiment 2 confirmed that these results were not due to the luminance information of shading. Experiment 3 demonstrated that RM magnitude was greater when convex apparently moving objects shifted to particular blurred convex hemispheres with lowpass filtering than when they shifted to concave hemispheres. These results suggest that the internal object's representation in apparent motion contains incomplete depth information intermediate between that of 2-D and 3-D objects, particularly with regard to convexity information with low-spatial-frequency components.
AB - In the present research, we investigated the depth information contained in the representations of apparently moving 3-D objects. By conducting three experiments, we measured the magnitude of representational momentum (RM) as an index of the consistency of an object's representation. Experiment 1A revealed that RM magnitude was greater when shaded, convex, apparently moving objects shifted to a flat circle than when they shifted to a shaded, concave, hemisphere. The difference diminished when the apparently moving objects were concave hemispheres (Experiment 1B). Using luminance-polarized circles, Experiment 2 confirmed that these results were not due to the luminance information of shading. Experiment 3 demonstrated that RM magnitude was greater when convex apparently moving objects shifted to particular blurred convex hemispheres with lowpass filtering than when they shifted to concave hemispheres. These results suggest that the internal object's representation in apparent motion contains incomplete depth information intermediate between that of 2-D and 3-D objects, particularly with regard to convexity information with low-spatial-frequency components.
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U2 - 10.3758/APP.71.6.1294
DO - 10.3758/APP.71.6.1294
M3 - Article
C2 - 19633345
AN - SCOPUS:70349499038
VL - 71
SP - 1294
EP - 1304
JO - Attention, Perception, and Psychophysics
JF - Attention, Perception, and Psychophysics
SN - 1943-3921
IS - 6
ER -