The Weber relation for position is not an artefact of eccentricity

We have measured the spatial threshold for discriminating the length of arcs falling on isoeccentric circles in the periphery out to 4 deg. The just-noticeable-difference rises with the arc length in the range 10–500 arc min, repeating the usual finding with foveally presented straight-line stimuli....

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Bibliographic Details
Published inVision research (Oxford) Vol. 29; no. 10; pp. 1457 - 1462
Main Authors Morgan, M.J., Watt, R.J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1989
Elsevier Science
Subjects
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Humans
Hyperacuity
Length discrimination
Perception
Periphery
Positional information
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychophysics
Space life sciences
Vision
Visual Acuity - physiology
Visual Perception - physiology
Weber's law
Hyperacuity
Positional information
Psychophysics
Weber's law
Length discrimination
Periphery
Perception
Visual stimulus
Eccentricity
Vision
Stimulus position
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Summary:We have measured the spatial threshold for discriminating the length of arcs falling on isoeccentric circles in the periphery out to 4 deg. The just-noticeable-difference rises with the arc length in the range 10–500 arc min, repeating the usual finding with foveally presented straight-line stimuli. Our results do not support a recent suggestion that the Weber relation is mainly due to greater positional uncertainty in the peripheral retina.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0042-6989
1878-5646
DOI:10.1016/0042-6989(89)90198-3