Wide-field retinotopy defines human cortical visual area V6

Sabrina Pitzalis, Claudio Galletti, Ruey Song Huang, Fabiana Patria, Giorgia Committeri, Gaspare Galati, Patrizia Fattori, Martin I. Sereno

Research output: Contribution to journalArticle

Abstract

The retinotopic organization of a newly identified visual area near the midline in the dorsalmost part of the human parieto-occipital sulcus was mapped using high-field functional magnetic resonance imaging, cortical surface-based analysis, and wide-field retinotopic stimulation. This area was found in all 34 subjects that were mapped. It represents the contralateral visual hemifield in both hemispheres of all subjects, with upper fields located anterior and medial to areas V2/V3, and lower fields medial and slightly anterior to areas V3/V3A. It contains a representation of the center of gaze distinct from V3A, a large representation of the visual periphery, and a mirror-image representation of the visual field. Based on similarity in position, visuotopic organization, and relationship with the neighboring extrastriate visual areas, we suggest it might be the human homolog of macaque area V6, and perhaps of area M (medial) or DM (dorsomedial) of New World primates.

Original languageEnglish
Pages (from-to)7962-7973
Number of pages12
JournalJournal of Neuroscience
Volume26
Issue number30
DOIs
Publication statusPublished - Jul 26 2006

Keywords

  • Brain mapping
  • Cortical flattening
  • Dorsal visual stream
  • Extrastriate areas
  • Parieto-occipital cortex
  • Visual topography

ASJC Scopus subject areas

  • Neuroscience(all)

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  • Cite this

    Pitzalis, S., Galletti, C., Huang, R. S., Patria, F., Committeri, G., Galati, G., Fattori, P., & Sereno, M. I. (2006). Wide-field retinotopy defines human cortical visual area V6. Journal of Neuroscience, 26(30), 7962-7973. https://doi.org/10.1523/JNEUROSCI.0178-06.2006