Attenuation of sensory processing in the primary somatosensory cortex during rubber hand illusion

The neural representation of the body is easily altered by the integration of multiple sensory signals in the brain. The “rubber hand illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, a feeling of ownership of the rubber hand is c...

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Bibliographic Details
Published in:Scientific reports 2021-04, Vol.11 (1), p.7329-7329, Article 7329
Main Authors: Sakamoto, Masanori, Ifuku, Hirotoshi
Format: Article
Language:English
Subjects:
631/378/2620
631/378/2649
631/378/3917
Cooling
Humanities and Social Sciences
Information processing
multidisciplinary
Neural coding
Science
Science (multidisciplinary)
Sensory integration
Sensory perception
Somatosensory cortex
Somatosensory evoked potentials
Tomography
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Summary:The neural representation of the body is easily altered by the integration of multiple sensory signals in the brain. The “rubber hand illusion” (RHI) is one of the most popular experimental paradigms to investigate this phenomenon. During this illusion, a feeling of ownership of the rubber hand is created. Some studies have shown that somatosensory processing in the brain is attenuated when RHI occurs. However, it is unknown where attenuation of somatosensory processing occurs. Here, we show that somatosensory processing is attenuated in the primary somatosensory cortex. We found that the earliest response of somatosensory evoked potentials, which is thought to originate from the primary somatosensory cortex, was attenuated during RHI. Furthermore, this attenuation was observed before the occurrence of the illusion. Our results suggest that attenuation of sensory processing in the primary somatosensory cortex is one of the factors influencing the occurrence of the RHI.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-86828-5