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. 1989;29(10):1457-62.
doi: 10.1016/0042-6989(89)90198-3.

The Weber relation for position is not an artefact of eccentricity

M J Morgan  1 , R J Watt
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The Weber relation for position is not an artefact of eccentricity

M J Morgan et al. Vision Res. 1989.

Abstract

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.

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