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Search: WFRF:(Venkataraman Abinaya Priya) > Blur adaptation :

Blur adaptation : Contrast sensitivity changes and stimulus extent

Venkataraman, Abinaya Priya (author)
KTH,Biomedicinsk fysik och röntgenfysik
Winter, Simon (author)
KTH,Biomedicinsk fysik och röntgenfysik
Unsbo, Peter (author)
KTH,Biomedicinsk fysik och röntgenfysik
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Lundström, Linda (author)
KTH,Biomedicinsk fysik och röntgenfysik
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 (creator_code:org_t)
Elsevier, 2015
2015
English.
In: Vision Research. - : Elsevier. - 0042-6989 .- 1878-5646. ; 110:PA, s. 100-106
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • A prolonged exposure to foveal defocus is well known to affect the visual functions in the fovea. However, the effects of peripheral blur adaptation on foveal vision, or vice versa, are still unclear. In this study, we therefore examined the changes in contrast sensitivity function from baseline, following blur adaptation to small as well as laterally extended stimuli in four subjects. The small field stimulus (7.5° visual field) was a 30. min video of forest scenery projected on a screen and the large field stimulus consisted of 7-tiles of the 7.5° stimulus stacked horizontally. Both stimuli were used for adaptation with optical blur (+2.00. D trial lens) as well as for clear control conditions. After small field blur adaptation foveal contrast sensitivity improved in the mid spatial frequency region. However, these changes neither spread to the periphery nor occurred for the large field blur adaptation. To conclude, visual performance after adaptation is dependent on the lateral extent of the adaptation stimulus.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Neurologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Neurology (hsv//eng)

Keyword

Adaptation
Contrast sensitivity
Optical defocus
Article
human
human experiment
normal human
optical blur
optics
priority journal
retina fovea
spatial frequency discrimination
visual acuity
visual adaptation
visual field
visual stimulation

Publication and Content Type

ref (subject category)
art (subject category)

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Venkataraman, Ab ...
Winter, Simon
Unsbo, Peter
Lundström, Linda
About the subject
MEDICAL AND HEALTH SCIENCES
MEDICAL AND HEAL ...
and Clinical Medicin ...
and Neurology
Articles in the publication
Vision Research
By the university
Royal Institute of Technology

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