MOTION AT ISOLUMINANCE - DISCRIMINATION DETECTION RATIOS FOR MOVING ISOLUMINANT GRATINGS

被引：95

作者：

LINDSEY, DT ^{[1
]}

TELLER, DY ^{[1
]}

机构：

[1] UNIV WASHINGTON,DEPT PHYSIOL BIOPHYS,SEATTLE,WA 98195

来源：

VISION RESEARCH | 1990年 / 30卷 / 11期

关键词：

Color vision; Isoluminance; Labeled detectors; Motion;

D O I：

10.1016/0042-6989(90)90157-G

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Subjects viewed a 2.3 × 2.3 deg patch of a moving 1.3c/deg, 3.75 Hz sinusoidal grating, centered 1.8 deg from fixation. Two-alternative forced-choice contrast thresholds were measured along the luminance axis and 10 chromatic axes at isoluminance for three tasks: detection (D), form discrimination (F) and discrimination of upward from downward motion (M). F/D threshold ratios averaged approx. 1:1 on all axes. M/D ratios were approx. 1:1 on the luminance axis, but varied from 3:1 to indeterminately large with chromatic axis at isoluminance. We conclude that under the present conditions there are large, highly specific losses of direction-of-motion information at isoluminance. The results imply the existence of chromatic channels that are labeled for form but not for direction of motion at threshold. The pattern and significance of variations in M/D ratios within the isoluminant plane is also discussed. © 1990.

引用

页码：1751 / 1761

页数：11

共 44 条

[1]

Aguilar M., 1954, OPT ACTA, V1, P59, DOI [DOI 10.1080/713818657, 10.1080/713818657]

[2]

Boynton R. M., 1978, VISUAL PSYCHOPHYSICS, P193

[3] PERCEIVED VELOCITY OF MOVING CHROMATIC GRATINGS [J].

CAVANAGH, P ;

TYLER, CW ;

FAVREAU, OE .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1984, 1 (08) :893-899

[4] EQUILUMINANCE - SPATIAL AND TEMPORAL FACTORS AND THE CONTRIBUTION OF BLUE-SENSITIVE CONES [J].

CAVANAGH, P ;

MACLEOD, DIA ;

ANSTIS, SM .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1987, 4 (08) :1428-1438

[5]

CAVANAGH P, 1991, IN PRESS VISION RES

[6]

CURCIO CA, 1990, IN PRESS J COMP NEUR

[7] RESEARCH INTO THE DYNAMIC NATURE OF THE HUMAN FOVEA-]CORTEX SYSTEMS WITH INTERMITTENT AND MODULATED LIGHT .2. PHASE SHIFT IN BRIGHTNESS AND DELAY IN COLOR PERCEPTION [J].

DELANGEDZN, H .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1958, 48 (11) :784-789

[8] CHROMATIC MECHANISMS IN LATERAL GENICULATE-NUCLEUS OF MACAQUE [J].

DERRINGTON, AM ;

KRAUSKOPF, J ;

LENNIE, P .

JOURNAL OF PHYSIOLOGY-LONDON, 1984, 357 (DEC) :241-265

[9]

DEWEERT CMM, 1983, COLOUR VISION

[10] SHARED PATHWAYS FOR ROD AND CONE VISION [J].

DZMURA, M ;

LENNIE, P .

VISION RESEARCH, 1986, 26 (08) :1273-1280

← 1 2 3 4 5 →