Functional Distribution in Area V1 Revealed by Spatially Uniform Stimuli

Hiroshi Horiguchi Jikei University, School of Medicine, Tokyo, Japan; Department of Ophthalmology, Kanagawa Rehabilitation Hospital, Atsugi, Japan

Satoshi Nakadomari Jikei University, School of Medicine, Tokyo, Japan; Department of Ophthalmology, Kanagawa Rehabilitation Hospital, Atsugi, Japan

Ayumu Furuta Maeda Ophthalmic Clinic, Aizuwakamatsu, Japan

Kunihiro Asakawa Jikei University, School of Medicine, Tokyo, Japan; Division of Sensory and Cognitive Information, Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan

Yoichiro Masuda Jikei University, School of Medicine, Tokyo, Japan; Department of Psychology, Stanford University School of Medicine, Stanford, CA

Kenji Kitahara Department of Ophthalmology, Jikei University, School of Medicine, Tokyo, Japan

Shigeyuki Kan National Institute of Information and Communications Technology, Kobe, Japan

Masaya Misaki National Institute of Information and Communications Technology, Kobe, Japan

Satoru Miyauchi National Institute of Information and Communications Technology, Kobe, Japan

show all

Abstract

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.

KEYWORDS:

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.

Functional Distribution in Area V1 Revealed by Spatially Uniform Stimuli

Information for

Open access

Opportunities

Help and information

Functional Distribution in Area V1 Revealed by Spatially Uniform Stimuli

Abstract

Reprints and Corporate Permissions

Academic Permissions

Related research

To cite this article:

Download citation

Information for

Open access

Opportunities

Help and information

Keep up to date

Your download is now in progress and you may close this window

Login or register to access this feature