Cited by 131Multisensory perception and integrationTactile and Sensory InteractionsVisual perception and processing mechanisms

Mapping multisensory parietal face and body areas in humans

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Huang, Ruey-Song, Chen, Ching-fu, Tran, Alyssa T., Holstein, Katie L., Sereno, Martin I.·2012·Proceedings of the National Academy of Sciences

Abstract

Detection and avoidance of impending obstacles is crucial to preventing head and body injuries in daily life. To safely avoid obstacles, locations of objects approaching the body surface are usually detected via the visual system and then used by the motor system to guide defensive movements. Mediating between visual input and motor output, the posterior parietal cortex plays an important role in integrating multisensory information in peripersonal space. We used functional MRI to map parietal areas that see and feel multisensory stimuli near or on the face and body. Tactile experiments using full-body air-puff stimulation suits revealed somatotopic areas of the face and multiple body parts forming a higher-level homunculus in the superior posterior parietal cortex. Visual experiments using wide-field looming stimuli revealed retinotopic maps that overlap with the parietal face and body areas in the postcentral sulcus at the most anterior border of the dorsal visual pathway. Starting at the parietal face area and moving medially and posteriorly into the lower-body areas, the median of visual polar-angle representations in these somatotopic areas gradually shifts from near the horizontal meridian into the lower visual field. These results suggest the parietal face and body areas fuse multisensory information in peripersonal space to guard an individual from head to toe.

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Crossref · 10.1073/pnas.1207946109

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Authors
Huang, R.-S., Chen, C.-F., Tran, A. T., Holstein, K. L., & Sereno, M. I.
Affiliations
  • Institute for Neural Computation,
  • Department of Electrical and Computer Engineering, and
  • University of California San Diego (US)
  • University of London (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2012-10-15
Volume
109
Issue
44
Pages
18114-18119
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2062140410
Cited by
131
References
57
Citations by year
2026: 7 · 2025: 7 · 2024: 8 · 2023: 7 · 2022: 7 · 2021: 19 · 2020: 11 · 2019: 10 · 2018: 8 · 2017: 12 · 2016: 10 · 2015: 13 · 2014: 6 · 2013: 6
FWCI
10.71
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • BIROn (Birkbeck, University of London) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
National Institute of Mental Health (R01MH081990)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
Keywords
posterior parietal cortex, peripersonal space, multisensory integration, somatotopic mapping, retinotopic mapping, looming stimuli, air-puff stimulation, postcentral sulcus, defensive movements, obstacle avoidance, homunculus
MeSH terms
Brain, Face, Humans, Magnetic Resonance Imaging, Touch, Vision, Ocular

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