Papers

Peer-reviewed Lead author
Jul, 2012

Retinotopic mapping of the peripheral visual field to human visual cortex by functional magnetic resonance imaging

HUMAN BRAIN MAPPING
  • Jinglong Wu
  • ,
  • Tianyi Yan
  • ,
  • Zhen Zhang
  • ,
  • Fengzhe Jin
  • ,
  • Qiyong Guo

Volume
33
Number
7
First page
1727
Last page
1740
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1002/hbm.21324
Publisher
WILEY-BLACKWELL

Retinotopic mapping is a key property of organization in the human occipital cortex. The retinotopic organization of the central visual field of visual areas V1, V2, and V3 has been well established. We used fMRI to measure the retinotopic map of the peripheral visual field (eccentricity up to 60 degrees). We estimated the sizes of the visual areas between 0 degrees and 60 degrees and obtained results consistent with anatomical studies. We also estimated the cortical distances and magnification factors for reconstruction of the retinotopic map using the peripheral wedge dipole model. By comparing the retinotopic map with the flattened surface, we analyzed the datasets used to reconstruct the map. We found that: (1) the percentage of the striate cortex devoted to peripheral vision in humans is significantly larger than that in the macaque, (2) the estimate of the scaling factor in linear magnification is larger than that found in previous studies focusing on central vision, and (3) the estimate of the peripheral factor in the dipolar model is too large to make the curve direction of the dipolar map in the periphery equivalent to that in the center. On the basis of our results, we revised the dipolar map to fit our conditions. The revised map in humans has a similar elliptical shape to that of macaques, and the central parts of the two species are the same. The different parts of the map are the peripheral regions, for which the peripheral wedge dipole model in humans is reversed compared to that of macaques. Hum Brain Mapp, 2012. (C) 2012 Wiley Periodicals, Inc.

Link information
DOI
https://doi.org/10.1002/hbm.21324
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000305127900017&DestApp=WOS_CPL
ID information
  • DOI : 10.1002/hbm.21324
  • ISSN : 1065-9471
  • Web of Science ID : WOS:000305127900017

Export
BibTeX RIS