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Featured ArticleArticles, Behavioral/Systems/Cognitive

Neural Basis of Embodiment: Distinct Contributions of Temporoparietal Junction and Extrastriate Body Area

Shahar Arzy, Gregor Thut, Christine Mohr, Christoph M. Michel and Olaf Blanke
Journal of Neuroscience 2 August 2006, 26 (31) 8074-8081; DOI: https://doi.org/10.1523/JNEUROSCI.0745-06.2006
Shahar Arzy
1Laboratory of Cognitive Neuroscience, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, 2Department of Neurology, University Hospital, 1211 Geneva, Switzerland, 3Department of Neurology, Hadassah Hebrew University Hospital, 91120 Jerusalem, Israel, 4Department of Fundamental Neuroscience, University Medical School, 1211 Geneva, Switzerland, and 5Department of Experimental Psychology, University of Bristol, Bristol, BS8 1TH, United Kingdom
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Gregor Thut
1Laboratory of Cognitive Neuroscience, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, 2Department of Neurology, University Hospital, 1211 Geneva, Switzerland, 3Department of Neurology, Hadassah Hebrew University Hospital, 91120 Jerusalem, Israel, 4Department of Fundamental Neuroscience, University Medical School, 1211 Geneva, Switzerland, and 5Department of Experimental Psychology, University of Bristol, Bristol, BS8 1TH, United Kingdom
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Christine Mohr
1Laboratory of Cognitive Neuroscience, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, 2Department of Neurology, University Hospital, 1211 Geneva, Switzerland, 3Department of Neurology, Hadassah Hebrew University Hospital, 91120 Jerusalem, Israel, 4Department of Fundamental Neuroscience, University Medical School, 1211 Geneva, Switzerland, and 5Department of Experimental Psychology, University of Bristol, Bristol, BS8 1TH, United Kingdom
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Christoph M. Michel
1Laboratory of Cognitive Neuroscience, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, 2Department of Neurology, University Hospital, 1211 Geneva, Switzerland, 3Department of Neurology, Hadassah Hebrew University Hospital, 91120 Jerusalem, Israel, 4Department of Fundamental Neuroscience, University Medical School, 1211 Geneva, Switzerland, and 5Department of Experimental Psychology, University of Bristol, Bristol, BS8 1TH, United Kingdom
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Olaf Blanke
1Laboratory of Cognitive Neuroscience, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, 2Department of Neurology, University Hospital, 1211 Geneva, Switzerland, 3Department of Neurology, Hadassah Hebrew University Hospital, 91120 Jerusalem, Israel, 4Department of Fundamental Neuroscience, University Medical School, 1211 Geneva, Switzerland, and 5Department of Experimental Psychology, University of Bristol, Bristol, BS8 1TH, United Kingdom
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Abstract

Embodiment, the sense of being localized within one's physical body, is a fundamental aspect of the self. Recently, researchers have started to show that self and body processing require distinct brain mechanisms, suggesting two posterior brain regions as key loci: the temporoparietal junction (TPJ), which is involved in self processing and multisensory integration of body-related information; and the extrastriate body area (EBA), which responds selectively to human bodies and body parts. Here we used evoked potential mapping and a distributed linear inverse solution to show that activations in EBA and TPJ code differentially for embodiment and self location, because the location and timing of brain activation depended on whether mental imagery is performed with mentally embodied (EBA) or disembodied (TPJ) self location. In a second experiment, we showed that only EBA activation, related to embodied self location, but not TPJ activation, related to disembodied self location, was modified by the subjects' body position during task performance (supine or sitting). This suggests that embodied self location and actual body location share neural mechanisms. Collectively, these data show that distributed brain activity at the EBA and TPJ as well as their timing are crucial for the coding of the self as embodied and as spatially situated within the human body.

  • embodiment
  • self
  • mental imagery
  • body position
  • extrastriate body area
  • EBA
  • temporoparietal junction
  • TPJ
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The Journal of Neuroscience: 26 (31)
Journal of Neuroscience
Vol. 26, Issue 31
2 Aug 2006
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Neural Basis of Embodiment: Distinct Contributions of Temporoparietal Junction and Extrastriate Body Area
Shahar Arzy, Gregor Thut, Christine Mohr, Christoph M. Michel, Olaf Blanke
Journal of Neuroscience 2 August 2006, 26 (31) 8074-8081; DOI: 10.1523/JNEUROSCI.0745-06.2006

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Neural Basis of Embodiment: Distinct Contributions of Temporoparietal Junction and Extrastriate Body Area
Shahar Arzy, Gregor Thut, Christine Mohr, Christoph M. Michel, Olaf Blanke
Journal of Neuroscience 2 August 2006, 26 (31) 8074-8081; DOI: 10.1523/JNEUROSCI.0745-06.2006
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Keywords

  • embodiment
  • self
  • mental imagery
  • body position
  • extrastriate body area
  • EBA
  • temporoparietal junction
  • TPJ

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