Position and spatial frequency in large-scale localization judgments.

C A Burbeck

doi:10.1016/0042-6989(87)90090-3

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Position and spatial frequency in large-scale localization judgments.

C A Burbeck

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Abstract

The frequency-channel model and the position, or "local-signs," model that have been proposed to account for hyperacuity (i.e. small-scale relative spatial localization) are examined in the context of large-scale relative spatial localization. As a basis for subsequent experiments, localization accuracy is measured over a large range of object separations, and previous findings that the "Weber fraction for localization" is constant are replicated. The effects on localization accuracy of both high- and low-spatial frequency components in the objects being localized are examined in some detail. Localization accuracy is found not to rely exclusively on either the high- or the low-frequency components. Neither the frequency-channel nor the position hypothesis as defined here is consistent with all of the observed results. However, with a slight modification, the position hypothesis can account qualitatively for all of the observed results, whereas no reasonable modification of the frequency-channel hypothesis appears able to do as well.

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Humans Models, Biological Pattern Recognition, Visual Psychometrics Sensory Thresholds Space Perception Visual Acuity Journal Article Research Support, U.S. Gov't, Non-P.H.S.

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C A Burbeck. 1987. Position and spatial frequency in large-scale localization judgments.. https://doi.org/10.1016/0042-6989(87)90090-3

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