Roles of the right temporo-parietal and premotor cortices in self-location and body ownership

The European Journal of Neuroscience
Silvia ConventoNadia Bolognini

Abstract

In the rubber hand illusion (RHI), the feeling that a fake hand belongs to oneself can be induced by the simultaneous, congruent touch of the fake visible hand and one's own hidden hand. This condition is also associated with a recalibration of the perceived location of the real hand. A cortical network, including premotor and temporo-parietal areas, has been proposed as the basis of the RHI. However, the causal contribution of these areas to the discrete illusory components remains unclear. We used transcranial direct current stimulation (tDCS) to assess the contribution of the right premotor cortex (rPMc) and the right temporo-parietal junction (rTPJ) to the RHI and explored the role of these areas in modulating the subjective experience of embodiment and the misperception of the hand position. We found that anodal tDCS of both rPMc and rTPJ increased the misjudgement of the real hand location towards the fake hand. Crucially, the difference in proprioceptive displacement evoked by the congruent and incongruent visuo-tactile stroking was minimised when tDCS was applied over the rPMc, while it was amplified when the rTPJ was targeted. The parietal effects of tDCS also extended to the self-report components of the RHI. These fi...Continue Reading

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Citations

Nov 16, 2019·Journal of Neuroengineering and Rehabilitation·Edgard MoryaAlexandre Hideki Okano
Jan 18, 2020·Journal of Cognitive Neuroscience·Marco D'AlonzoGiovanni Di Pino
Jan 9, 2019·Frontiers in Psychology·Elena NavaNadia Bolognini
Aug 18, 2018·The European Journal of Neuroscience·Carlotta FossataroFrancesca Garbarini
Apr 27, 2021·Neuroscience and Biobehavioral Reviews·Celine De MeulemeesterPatrick Luyten
Jun 29, 2021·Frontiers in Neuroscience·Zhongjie BaoPaul Frewen
Jul 10, 2021·Cerebral Cortex·Gustavo S P PamplonaSilvio Ionta
Jul 7, 2021·Brain Structure & Function·Junjun LiYang Yang

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