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Causal Dynamics of Scalp Electroencephalography Oscillation During the Rubber Hand Illusion

Overview of attention for article published in Brain Topography, September 2016
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Title
Causal Dynamics of Scalp Electroencephalography Oscillation During the Rubber Hand Illusion
Published in
Brain Topography, September 2016
DOI 10.1007/s10548-016-0519-x
Pubmed ID
Authors

Noriaki Kanayama, Alberto Morandi, Kazuo Hiraki, Francesco Pavani

Abstract

Rubber hand illusion (RHI) is an important phenomenon for the investigation of body ownership and self/other distinction. The illusion is promoted by the spatial and temporal contingencies of visual inputs near a fake hand and physical touches to the real hand. The neural basis of this phenomenon is not fully understood. We hypothesized that the RHI is associated with a fronto-parietal circuit, and the goal of this study was to determine the dynamics of neural oscillation associated with this phenomenon. We measured electroencephalography while delivering spatially congruent/incongruent visuo-tactile stimulations to fake and real hands. We applied time-frequency analyses and calculated renormalized partial directed coherence (rPDC) to examine cortical dynamics during the bodily illusion. When visuo-tactile stimulation was spatially congruent, and the fake and real hands were aligned, we observed a reduced causal relationship from the medial frontal to the parietal regions with respect to baseline, around 200 ms post-stimulus. This change in rPDC was negatively correlated with a subjective report of the RHI intensity. Moreover, we observed a link between the proprioceptive drift and an increased causal relationship from the parietal cortex to the right somatosensory cortex during a relatively late period (550-750 ms post-stimulus). These findings suggest a two-stage process in which (1) reduced influence from the medial frontal regions over the parietal areas unlocks the mechanisms that preserve body integrity, allowing RHI to emerge; and (2) information processed at the parietal cortex is back-projected to the somatosensory cortex contralateral to the real hand, inducing proprioceptive drift.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 62 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Italy 1 2%
Unknown 61 98%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 13 21%
Student > Master 13 21%
Researcher 11 18%
Student > Doctoral Student 6 10%
Unspecified 6 10%
Other 13 21%
Readers by discipline Count As %
Psychology 19 31%
Neuroscience 16 26%
Unspecified 15 24%
Engineering 4 6%
Agricultural and Biological Sciences 2 3%
Other 6 10%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 14 September 2016.
All research outputs
#9,856,760
of 12,339,349 outputs
Outputs from Brain Topography
#229
of 327 outputs
Outputs of similar age
#186,096
of 264,029 outputs
Outputs of similar age from Brain Topography
#11
of 18 outputs
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