Cited by 154Visual perception and processing mechanismsMotor Control and AdaptationFace Recognition and Perception

The human homologue of macaque area V6A

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Pitzalis, S., Sereno, M.I., Committeri, G., Fattori, P., Galati, G., Tosoni, A., Galletti, C.·2013·NeuroImage

Abstract

In macaque monkeys, V6A is a visuomotor area located in the anterior bank of the POs, dorsal and anterior to retinotopically-organized extrastriate area V6 (Galletti et al., 1996). Unlike V6, V6A represents both contra- and ipsilateral visual fields and is broadly retinotopically organized (Galletti et al., 1999b). The contralateral lower visual field is over-represented in V6A. The central 20°-30° of the visual field is mainly represented dorsally (V6Ad) and the periphery ventrally (V6Av), at the border with V6. Both sectors of area V6A contain arm movement-related cells, active during spatially-directed reaching movements (Gamberini et al., 2011). In humans, we previously mapped the retinotopic organization of area V6 (Pitzalis et al., 2006). Here, using phase-encoded fMRI, cortical surface-based analysis and wide-field retinotopic mapping, we define a new cortical region that borders V6 anteriorly and shows a clear over-representation of the contralateral lower visual field and the periphery. As with macaque V6A, the eccentricity increases moving ventrally within the area. The new region contains a non-mirror-image representation of the visual field. Functional mapping reveals that, as in macaque V6A, the new region, but not the nearby area V6, responds during finger pointing and reaching movements. Based on similarity in position, retinotopic properties, functional organization and relationship with the neighboring extrastriate visual areas, we propose that the new cortical region is the human homologue of macaque area V6A.

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Authors
Pitzalis, S., Sereno, M. I., Committeri, G., Fattori, P., Galati, G., Tosoni, A., & Galletti, C.
Affiliations
  • Foro Italico University of Rome (IT)
  • University College London (GB)
  • University of Chieti-Pescara (IT)
  • University of Bologna (IT)
  • Fondazione Santa Lucia (IT)
Corresponding author
Pitzalis, S.
Venue
NeuroImage
Publisher
Elsevier BV
Published
2013-11
Volume
82
Pages
517-530
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2034048796
Cited by
154
References
65
Citations by year
2026: 3 · 2025: 7 · 2024: 13 · 2023: 6 · 2022: 10 · 2021: 21 · 2020: 13 · 2019: 11 · 2018: 13 · 2017: 11 · 2016: 14 · 2015: 16 · 2014: 12 · 2013: 3
FWCI
8.23
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
Funders
  • MIUR (2006055034_002, 2006055034_001)
  • Italian Ministry of Health (RC2008–2009)
  • Fondazione del Monte di Bologna e Ravenna, Italy
  • NIH (R01 MH 081990)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
Keywords
human homologue, macaque visual cortex, retinotopic mapping, eccentricity, finger pointing, reaching movements, extrastriate cortex
MeSH terms
Adult, Animals, Brain Mapping, Female, Humans, Image Processing, Computer-Assisted, Macaca, Magnetic Resonance Imaging, Male, Photic Stimulation, Visual Cortex, Visual Pathways

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