Conditional spatial-frequency selective pooling of one-dimensional motion signals into global two-dimensional motion.
This study examined spatial-frequency effects on a motion-pooling process in which spatially distributed local one-dimensional motion signals are integrated into the perception of global two-dimensional motion. Motion pooling over two- to three-octave frequency differences was found to be nearly impossible when all Gabor elements had circular envelopes, but possible when the width of high-frequency elements was reduced, and the stimulus as a whole formed a closed contour configuration. These results are consistent with a view that motion pooling is controlled by form information, and that spatial-frequency difference is one, but not an absolute, form cue of segmentation.
Maruya
Kazushi
K
NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya Atsugi-shi, Kanagawa, Japan. Kazushi.Maruya@gmail.com
Amano
Kaoru
K
Nishida
Shin'ya
S
D000704:Analysis of Variance; D004192:Discrimination, Psychological / Q000502:physiology; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D012684:Sensory Thresholds / Q000502:physiology