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Audio-Tactile and Peripersonal Space Processing Around the Trunk in Human Parietal and Temporal Cortex: An Intracranial EEG Study

Author

Listed:
  • Fosco Bernasconi

    (LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, CNP - Center for Neuroprosthetics [Geneva] - EPFL - Ecole Polytechnique Fédérale de Lausanne)

  • Jean-Paul Noel

    (LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, Vanderbilt University [Nashville], Vanderbilt Brain Institute - Vanderbilt University School of Medicine [Nashville])

  • Hyeong Dong Park

    (LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, CNP - Center for Neuroprosthetics [Geneva] - EPFL - Ecole Polytechnique Fédérale de Lausanne)

  • Nathan Faivre

    (CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique, LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, CNP - Center for Neuroprosthetics [Geneva] - EPFL - Ecole Polytechnique Fédérale de Lausanne)

  • Margitta Seeck

    (Presurgical Epilepsy Evaluation Unit, Neurology Department, University Hospital of Geneva)

  • Laurent Spinelli

    (Presurgical Epilepsy Evaluation Unit, Neurology Department, University Hospital of Geneva)

  • Karl Schaller

    (Department of Neurosurgery, Geneva University Hospital (HUG))

  • Olaf Blanke

    (LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, CNP - Center for Neuroprosthetics [Geneva] - EPFL - Ecole Polytechnique Fédérale de Lausanne)

  • Andrea Serino

    (LNCO - Laboratory of Cognitive Neuroscience - EPFL - Ecole Polytechnique Fédérale de Lausanne, CNP - Center for Neuroprosthetics [Geneva] - EPFL - Ecole Polytechnique Fédérale de Lausanne, MySpace Lab, Department of Clinical Neuroscience, Centre Hospitalier Universitaire Vaudois (CHUV) - CHUV - Centre Hospitalier Universitaire Vaudois = Lausanne University Hospital [Lausanne])

Abstract

Interactions with the environment happen within one's peripersonal space (PPS)-the space surrounding the body. Studies in monkeys and humans have highlighted a multisensory distributed cortical network representing the PPS. However, knowledge about the temporal dynamics of PPS processing around the trunk is lacking. Here, we recorded intracranial electroencephalography (iEEG) in humans while administering tactile stimulation (T), approaching auditory stimuli (A), and the 2 combined (AT). To map PPS, tactile stimulation was delivered when the sound was far, intermediate, or close to the body. The 19% of the electrodes showed AT multisensory integration. Among those, 30% showed a PPS effect, a modulation of the response as a function of the distance between the sound and body. AT multisensory integration and PPS effects had similar spatiotemporal characteristics, with an early response (~50 ms) in the insular cortex, and later responses (~200 ms) in precentral and postcentral gyri. Superior temporal cortex showed a different response pattern with AT multisensory integration at ~100 ms without a PPS effect. These results, represent the first iEEG delineation of PPS processing in humans and show that PPS and multisensory integration happen at similar neural sites and time periods, suggesting that PPS representation is based on a spatial modulation of multisensory integration.

Suggested Citation

  • Fosco Bernasconi & Jean-Paul Noel & Hyeong Dong Park & Nathan Faivre & Margitta Seeck & Laurent Spinelli & Karl Schaller & Olaf Blanke & Andrea Serino, 2018. "Audio-Tactile and Peripersonal Space Processing Around the Trunk in Human Parietal and Temporal Cortex: An Intracranial EEG Study," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-01907979, HAL.
    • Handle: RePEc:hal:cesptp:hal-01907979
    DOI: 10.1093/cercor/bhy156
    as

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