ORIENTATION ACUITY FOR SINE-WAVE GRATINGS WITH RANDOM VARIATION OF SPATIAL-FREQUENCY

被引：16

作者：

HEELEY, DW

BUCHANANSMITH, HM

HEYWOOD, S

机构：

[1] Department of Psychology, University of St Andrews, St Andrews

来源：

VISION RESEARCH | 1993年 / 33卷 / 17期

关键词：

ORIENTATION ACUITY; MERIDIONAL ANISOTROPY; OBLIQUE EFFECT;

D O I：

10.1016/0042-6989(93)90131-F

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Orientation discrimination thresholds were estimated for sine-wave grating stimuli using a two-alternative forced-choice procedure on the two principal, and the two main oblique axes. The two discriminanda within any trial were subject to independent random variation of their spatial frequency. The variation of spatial frequency was defined by a Gaussian probability density function. Thresholds were obtained for five different depths of frequency variation within the range 0.0-1.0 octave. We find that orientation acuity on any of the axes tested is unaffected by variation in the spatial frequency of the targets. The data support the hypothesis that orientation and spatial frequency are independent and orthogonal neural codes.

引用

页码：2509 / 2513

页数：5

共 26 条

[1] [Anonymous], 1971, PROBIT ANAL
[2] ORIENTATION SPECIFICITY OF 2 VISUAL AFTER-EFFECTS
BLAKEMORE, C
NACHMIAS, J
[J]. JOURNAL OF PHYSIOLOGY-LONDON, 1971, 213 (01): : 157 - +
[3] CONTRAST DISCRIMINATION CANNOT EXPLAIN SPATIAL-FREQUENCY, ORIENTATION OR TEMPORAL FREQUENCY DISCRIMINATION
BOWNE, SF
[J]. VISION RESEARCH, 1990, 30 (03) : 449 - 461
[4] THE EFFECTS OF LARGE ORIENTATION AND SPATIAL-FREQUENCY DIFFERENCES ON SPATIAL DISCRIMINATIONS
BRADLEY, A
SKOTTUN, BC
[J]. VISION RESEARCH, 1984, 24 (12) : 1889 - 1896
[5] VISUAL ORIENTATION AND SPATIAL-FREQUENCY DISCRIMINATION - A COMPARISON OF SINGLE NEURONS AND BEHAVIOR
BRADLEY, A
SKOTTUN, BC
OHZAWA, I
SCLAR, G
FREEMAN, RD
[J]. JOURNAL OF NEUROPHYSIOLOGY, 1987, 57 (03) : 755 - 772
[6] BUCHANANSMITH HM, 1993, UNPUB VISION RES
[7] BUCHANANSMITH HM, 1992, PERCEPTION S2, V21, pC99
[8] INDEPENDENCE OF ORIENTATION AND SIZE IN SPATIAL DISCRIMINATIONS
BURBECK, CA
REGAN, D
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1983, 73 (12) : 1691 - 1694
[9] Hawken M, 1990, VISION CODING EFFICI
[10] HEELEY D W, 1992, Spatial Vision, V6, P1, DOI 10.1163/156856892X00028

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