Seeing multiple directions of motion - physiology and psychophysics

被引:174
作者
Treue, S [1 ]
Hol, K [1 ]
Rauber, HJ [1 ]
机构
[1] Univ Tubingen, Dept Neurol, Cognit Neurosci Lab, D-72076 Tubingen, Germany
关键词
D O I
10.1038/72985
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Dot patterns sliding transparently across one another are normally perceived as independently moving surfaces. Recordings from direction-selective neurons in area MT of the macaque suggested that this perceptual segregation did not depend on the presence of two peaks in the population activity. Rather, the visual system seemed to use overall shape of the population response to determine the number and directions of motion components. This approach explained a number of perceptual phenomena, including susceptibility of the motion system to direction metamers, motion patterns combining three or five directions incorrectly perceived by subjects as comprising only two directions. Our findings offer insights into the coding of multi-valued sensory signals and provide constraints for biologically based computational models.
引用
收藏
页码:270 / 276
页数:7
相关论文
共 39 条
[1]   DIRECTION AND ORIENTATION SELECTIVITY OF NEURONS IN VISUAL AREA MT OF THE MACAQUE [J].
ALBRIGHT, TD .
JOURNAL OF NEUROPHYSIOLOGY, 1984, 52 (06) :1106-1130
[2]   Local and global representations of velocity: transparency, opponency, and global direction perception [J].
Braddick, O .
PERCEPTION, 1997, 26 (08) :995-1010
[3]   INTEGRATION OF MOTION AND STEREOPSIS IN MIDDLE TEMPORAL CORTICAL AREA OF MACAQUES [J].
BRADLEY, DC ;
QIAN, N ;
ANDERSEN, RA .
NATURE, 1995, 373 (6515) :609-611
[4]   Tuning bandwidths for near-threshold stimuli in area MT [J].
Britten, KH ;
Newsome, WT .
JOURNAL OF NEUROPHYSIOLOGY, 1998, 80 (02) :762-770
[5]   Image segmentation enhances discrimination of motion in visual noise [J].
Croner, LJ ;
Albright, TD .
VISION RESEARCH, 1997, 37 (11) :1415-1427
[6]  
Croner LJ, 1999, J NEUROSCI, V19, P3935
[7]   Cortical area MT and the perception of stereoscopic depth [J].
DeAngelis, GC ;
Cumming, BG ;
Newsome, WT .
NATURE, 1998, 394 (6694) :677-680
[8]   Reading population codes: a neural implementation of ideal observers [J].
Deneve, S ;
Latham, PE ;
Pouget, A .
NATURE NEUROSCIENCE, 1999, 2 (08) :740-745
[9]  
GRAZIANO MSA, 1994, J NEUROSCI, V14, P54
[10]  
Grunewald A, 1996, NATURE, V384, P358, DOI 10.1038/384358a0