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Polarization perception in humans: on the origin of and relationship between Maxwell's spot and Haidinger's brushes
Temple, Shelby E. Anderson, Stephen J.
Temple, Shelby E.
Anderson, Stephen J.
Abstract
Under specific conditions of illumination and polarization, differential absorption of light by macular pigments is perceived as the entoptic phenomena of Maxwell's spot (MS) or Haidinger's brushes (HB). To simulate MS and HB, an existing computational model of polarization-dependent properties of the human macula was extended by incorporating neuronal adaptation to stabilized retinal images. The model predicted that polarized light modifies the appearance of MS leading to the perception of a novel phenomenon. The model also predicted a correlation between the observed diameters of MS and HB. Predictions were tested psychophysically in human observers, whose measured differences in the diameters of each entoptic phenomenon generated with depolarized and linearly polarized light were consistent with the model simulations. These findings support a common origin of each phenomenon, and are relevant to the clinical use of polarization stimuli in detecting and monitoring human eye disorders, including macular degeneration. We conclude: (i) MS and HB both result from differential light absorption through a radial diattenuator, compatible with the arrangement of macular pigments in Henle fibres; (ii) the morphology of MS is dependent on the degree of linear polarization; (iii) perceptual differences between MS and HB result from different states of neural adaptation.
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Date
2020-01
Type
Article
Subject
Ophthalmology
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Citation
Misson GP, Temple SE, Anderson SJ. Polarization perception in humans: on the origin of and relationship between Maxwell's spot and Haidinger's brushes. Sci Rep. 2020 Jan 10;10(1):108. doi: 10.1038/s41598-019-56916-8.
Journal / Source Title
Scientific Reports
DOI
10.1038/s41598-019-56916-8
PMID
31924831
Publisher
Nature Research
Publisher’s URL
http://www.ncbi.nlm.nih.gov/pmc/articles/pmc6954220/
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