THE CODING OF SPATIAL POSITION BY THE HUMAN VISUAL-SYSTEM - EFFECTS OF SPATIAL SCALE AND CONTRAST

被引:57
作者
HESS, RF [1 ]
HOLLIDAY, IE [1 ]
机构
[1] UNIV CAMBRIDGE,DEPT PHYSIOL,CAMBRIDGE CB2 3EG,ENGLAND
关键词
SPATIAL ALIGNMENT; CONTRAST; SPATIAL FREQUENCY; SPATIAL SCALE;
D O I
10.1016/0042-6989(92)90009-8
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In this study we investigate the nature of the computations that underlie the encoding of spatial position by the human visual system. Specifically, we explore the relationship between alignment accuracy and spatial scale on the one hand, and between alignment accuracy and contrast on the other. We do this for stimuli where local luminance, local contrast, and orientation cues do not underlie performance. The results suggest that spatial localisation is independent of spatial scale and weakly dependent on contrast. We present subsequent models based on the properties of some classes of visual cortical neurones, namely multiplicative noise and contrast energy detection of complex cells, which describe the form of these relationships.
引用
收藏
页码:1085 / 1097
页数:13
相关论文
共 38 条
[1]  
Badcock D R, 1988, Spat Vis, V3, P305, DOI 10.1163/156856888X00186
[2]   SPATIAL PHASE OR LUMINANCE PROFILE DISCRIMINATION [J].
BADCOCK, DR .
VISION RESEARCH, 1984, 24 (06) :613-623
[3]   HOW DO WE DISCRIMINATE RELATIVE SPATIAL PHASE [J].
BADCOCK, DR .
VISION RESEARCH, 1984, 24 (12) :1847-1857
[4]   ON EXISTENCE OF NEURONES IN HUMAN VISUAL SYSTEM SELECTIVELY SENSITIVE TO ORIENTATION AND SIZE OF RETINAL IMAGES [J].
BLAKEMORE, C ;
CAMPBELL, FW .
JOURNAL OF PHYSIOLOGY-LONDON, 1969, 203 (01) :237-+
[5]   IS REDUCED VERNIER ACUITY IN AMBLYOPIA DUE TO POSITION, CONTRAST OR FIXATION DEFICITS [J].
BRADLEY, A ;
FREEMAN, RD .
VISION RESEARCH, 1985, 25 (01) :55-&
[6]   POSITION AND SPATIAL-FREQUENCY IN LARGE-SCALE LOCALIZATION JUDGMENTS [J].
BURBECK, CA .
VISION RESEARCH, 1987, 27 (03) :417-427
[7]   LARGE-SCALE RELATIVE LOCALIZATION ACROSS SPATIAL-FREQUENCY CHANNELS [J].
BURBECK, CA .
VISION RESEARCH, 1988, 28 (07) :857-859
[8]   SPATIAL-FREQUENCY SELECTIVITY OF CELLS IN MACAQUE VISUAL-CORTEX [J].
DEVALOIS, RL ;
ALBRECHT, DG ;
THORELL, LG .
VISION RESEARCH, 1982, 22 (05) :545-559
[9]  
FIDNLAY JM, 1973, NATURE, V241, P135
[10]   RELATIONS BETWEEN THE STATISTICS OF NATURAL IMAGES AND THE RESPONSE PROPERTIES OF CORTICAL-CELLS [J].
FIELD, DJ .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1987, 4 (12) :2379-2394