Vision is adapted to the natural level of blur present in the retinal image.
The image formed by the eye's optics is inherently blurred by aberrations specific to an individual's eyes. We examined how visual coding is adapted to the optical quality of the eye.We assessed the relationship between perceived blur and the retinal image blur resulting from high order ab...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3206891?pdf=render |
| _version_ | 1811281765387468800 |
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| author | Lucie Sawides Pablo de Gracia Carlos Dorronsoro Michael A Webster Susana Marcos |
| author_facet | Lucie Sawides Pablo de Gracia Carlos Dorronsoro Michael A Webster Susana Marcos |
| author_sort | Lucie Sawides |
| collection | DOAJ |
| description | The image formed by the eye's optics is inherently blurred by aberrations specific to an individual's eyes. We examined how visual coding is adapted to the optical quality of the eye.We assessed the relationship between perceived blur and the retinal image blur resulting from high order aberrations in an individual's optics. Observers judged perceptual blur in a psychophysical two-alternative forced choice paradigm, on stimuli viewed through perfectly corrected optics (using a deformable mirror to compensate for the individual's aberrations). Realistic blur of different amounts and forms was computer simulated using real aberrations from a population. The blur levels perceived as best focused were close to the levels predicted by an individual's high order aberrations over a wide range of blur magnitudes, and were systematically biased when observers were instead adapted to the blur reproduced from a different observer's eye.Our results provide strong evidence that spatial vision is calibrated for the specific blur levels present in each individual's retinal image and that this adaptation at least partly reflects how spatial sensitivity is normalized in the neural coding of blur. |
| first_indexed | 2024-04-13T01:39:31Z |
| format | Article |
| id | doaj.art-356b68071abf4f2caa01877bb5ffba96 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T01:39:31Z |
| publishDate | 2011-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-356b68071abf4f2caa01877bb5ffba962022-12-22T03:08:13ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-01611e2703110.1371/journal.pone.0027031Vision is adapted to the natural level of blur present in the retinal image.Lucie SawidesPablo de GraciaCarlos DorronsoroMichael A WebsterSusana MarcosThe image formed by the eye's optics is inherently blurred by aberrations specific to an individual's eyes. We examined how visual coding is adapted to the optical quality of the eye.We assessed the relationship between perceived blur and the retinal image blur resulting from high order aberrations in an individual's optics. Observers judged perceptual blur in a psychophysical two-alternative forced choice paradigm, on stimuli viewed through perfectly corrected optics (using a deformable mirror to compensate for the individual's aberrations). Realistic blur of different amounts and forms was computer simulated using real aberrations from a population. The blur levels perceived as best focused were close to the levels predicted by an individual's high order aberrations over a wide range of blur magnitudes, and were systematically biased when observers were instead adapted to the blur reproduced from a different observer's eye.Our results provide strong evidence that spatial vision is calibrated for the specific blur levels present in each individual's retinal image and that this adaptation at least partly reflects how spatial sensitivity is normalized in the neural coding of blur.http://europepmc.org/articles/PMC3206891?pdf=render |
| spellingShingle | Lucie Sawides Pablo de Gracia Carlos Dorronsoro Michael A Webster Susana Marcos Vision is adapted to the natural level of blur present in the retinal image. PLoS ONE |
| title | Vision is adapted to the natural level of blur present in the retinal image. |
| title_full | Vision is adapted to the natural level of blur present in the retinal image. |
| title_fullStr | Vision is adapted to the natural level of blur present in the retinal image. |
| title_full_unstemmed | Vision is adapted to the natural level of blur present in the retinal image. |
| title_short | Vision is adapted to the natural level of blur present in the retinal image. |
| title_sort | vision is adapted to the natural level of blur present in the retinal image |
| url | http://europepmc.org/articles/PMC3206891?pdf=render |
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