Second-order motion discrimination by feature-tracking

被引:39
作者
Derrington, AM [1 ]
Ukkonen, OI [1 ]
机构
[1] Univ Nottingham, Dept Psychol, Nottingham NG7 2RD, England
基金
英国惠康基金;
关键词
psychophysics; motion perception; second-order motion; feature-tracking;
D O I
10.1016/S0042-6989(98)00227-2
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
When a plaid pattern (the sum of two high spatial frequency gratings oriented +/- 84 degrees from vertical) jumps horizontally by 3/8 of its spatial period its contrast envelope, a second-order pattern, moves in the opposite direction to its luminance waveform. Observers report that the pattern moves in the direction of the contrast envelope when the jumps are repeated at intervals of more than 125 ms and in the direction of the luminance profile when they are repeated at longer intervals. When a pedestal [Lu, Z.-L. & Sperling, G. (1995). Vision Research, 35, 2697-2722] is added to the moving plaid a higher contrast is required to see motion of the contrast envelope but not to see the motion of the luminance profile, suggesting that the motion of the contrast envelope is sensed by a mechanism that tracks features. Static plaids with different spatial parameters from the moving pattern are less effective at raising the contrast required to see the motion of the contrast envelope and simple gratings of low or high spatial frequency are almost completely ineffective, suggesting that the feature-tracking mechanism is selective for the type of pattern being tracked and rejects distortion products and zero-crossings. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1465 / 1475
页数:11
相关论文
共 26 条
[1]   SPATIOTEMPORAL ENERGY MODELS FOR THE PERCEPTION OF MOTION [J].
ADELSON, EH ;
BERGEN, JR .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1985, 2 (02) :284-299
[2]   THE PERCEPTION OF APPARENT MOVEMENT [J].
ANSTIS, SM ;
MACKAY, DM .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1980, 290 (1038) :153-168
[3]   DETECTING THE DISPLACEMENT OF PERIODIC PATTERNS [J].
BADCOCK, DR ;
DERRINGTON, AM .
VISION RESEARCH, 1985, 25 (09) :1253-1258
[4]   Evidence for a feature tracking explanation of why type II plaids move in the vector sum direction at short durations [J].
Bowns, L .
VISION RESEARCH, 1996, 36 (22) :3685-3694
[5]   EVIDENCE FOR NONLINEAR RESPONSE PROCESSES IN HUMAN VISUAL SYSTEM FROM MEASUREMENTS ON THRESHOLDS OF SPATIAL BEAT FREQUENCIES [J].
BURTON, GJ .
VISION RESEARCH, 1973, 13 (07) :1211-1225
[6]  
CAVANAGH P, 1989, Spatial Vision, V4, P103, DOI 10.1163/156856889X00077
[7]   DRIFT-BALANCED RANDOM STIMULI - A GENERAL BASIS FOR STUDYING NON-FOURIER MOTION PERCEPTION [J].
CHUBB, C ;
SPERLING, G .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1988, 5 (11) :1986-2007
[8]  
DERRINGTON A, 1994, INVEST OPHTH VIS SCI, V35, P1406
[10]   SEPARATE DETECTORS FOR SIMPLE AND COMPLEX GRATING PATTERNS [J].
DERRINGTON, AM ;
BADCOCK, DR .
VISION RESEARCH, 1985, 25 (12) :1869-1878