The parvo and magno-cellular systems encode natural image statistics parameters
نویسندگان
چکیده
منابع مشابه
Functional Assessment of Magno, Parvo and Konio-Cellular Pathways; Current State and Future Clinical Applications
The information generated by cone photoreceptors in the retina is compressed and transferred to higher processing centers through three distinct types of ganglion cells known as magno, parvo and konio cells. These ganglion cells, which travel from the retina to the lateral geniculate nucleus (LGN) and then to the primary visual cortex, have different structural and functional characteristics, a...
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Foveal pathway visual function was assessed in 11 patients having tumours extending into the suprasellar region but without evidence of visual impairment as assessed by visual acuity and Bjerrum screen campimetry. Psychophysical and routine visual evoked potential (VEP) measurements were obtained from the eye ipsilateral to the maximal suprasellar extension. The sensitivity of luminance and chr...
متن کاملPsychophysical Evidence for Impaired Magno, Parvo, and Konio-cellular Pathways in Dyslexic Children
PURPOSE Dyslexia is one of the most common learning disabilities affecting millions of people worldwide. Although exact causes of dyslexia are not well-known, a deficit in the magnocellular pathway may play a role. We examined possible deficiency of magnocellular, as compared to parvocellular and koniocellular pathway function by measuring luminance and color perception. METHODS Visual stimul...
متن کاملIndependent patterns of damage within magno-, parvo- and koniocellular pathways in Parkinson's disease.
Sensory deficits have been documented in Parkinson's disease, in particular within the visual domain. However, ageing factors related to the brain and to neural and non-neural ocular structures could explain some of the previously reported results, in particular the claimed impairment within the koniocellular pathway. This study addressed visual impairment attributable to the magno- (luminance)...
متن کاملWavelets and Natural Image Statistics
It is well-known that wavelets provide a transformation of image data that has excellent properties with respect to image compression. The reasons for the compression ability of wavelets however have not been fully understood. In this paper we show that there is an interesting connection between wavelets and statistical properties of real-world images. This might lead to new theoretical and pra...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/8.6.686