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The human homologue of macaque area V6A
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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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“For instance, the parieto-occipital junction (POJ), the homologous of monkey area V6 (Pitzalis et al. 2013), has demonstrated a preference for near vs. far viewing in different fMRI investigations (Quinlan and Culham 2007; Wang et al. 2016; Huang et al. 2018).”
From Neuroanatomical correlates of peripersonal space: bridging the gap between perception, action, emotion and social cognition (2024) · cites this paper as Pitzalis et al. 2013
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Metadata
- 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)
- PMC
- PMC3760586
- 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
- hybrid
- doi.org
- Licence
- 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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