Functional Distribution in Area V1 Revealed by Spatially Uniform Stimuli

Autor:	Satoshi Nakadomari, Yoichiro Masuda, Hiroshi Horiguchi, Kenji Kitahara, Satoru Miyauchi, Masaya Misaki, Kunihiro Asakawa, Ayumu Furuta, Shigeyuki Kan
Rok vydání:	2007
Předmět:	Physics Retina medicine.diagnostic_test media_common.quotation_subject Anatomy Luminance law.invention Ophthalmology medicine.anatomical_structure Retinal ganglion cell Achromatic lens law medicine sense organs Neurology (clinical) Eccentricity (behavior) Functional magnetic resonance imaging Neuroscience Cycloplegic agent media_common
Zdroj:	Neuro-Ophthalmology. 31:179-185
ISSN:	1744-506X 0165-8107
DOI:	10.1080/01658100701647761
Popis:	We measured responses to pure luminance changes in area V1 using functional magnetic resonance imaging. We fully dilated the subjects' pupils with a mydriatic agent; placed semitransparent, hemispheric covers over the subjects' eyes; and varied luminance levels of stimuli gradually or instantaneously. We found that the profile of cortical responses varied at about 10 degrees of eccentricity on the representation in area V1 despite the use of uniform achromatic stimuli. This variation was possibly caused by differences between response profiles in the central and peripheral zones of the retina. Our results might reflect the functional distribution of retinal ganglion cell projections.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a19555c8003cdb4ab1256ba66f68b255 https://doi.org/10.1080/01658100701647761 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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