Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation
During rubber hand illusion (RHI), participants feel that a rubber (fake) hand is their own (i.e., embodiment of the rubber hand) if the unseen real hand and seen rubber hand are stroked synchronously (i.e., visuo-tactile stimuli). The RHI is also evoked if the real and rubber hands are placed in th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Brain Sciences |
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| Online Access: | https://www.mdpi.com/2076-3425/13/6/969 |
| _version_ | 1797595661517979648 |
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| author | Satoshi Shibuya Yukari Ohki |
| author_facet | Satoshi Shibuya Yukari Ohki |
| author_sort | Satoshi Shibuya |
| collection | DOAJ |
| description | During rubber hand illusion (RHI), participants feel that a rubber (fake) hand is their own (i.e., embodiment of the rubber hand) if the unseen real hand and seen rubber hand are stroked synchronously (i.e., visuo-tactile stimuli). The RHI is also evoked if the real and rubber hands are placed in the same position (i.e., visual-proprioceptive congruency), which can be performed using a mirror setting. Using electroencephalography (EEG) and mirror settings, we compared μ rhythm (8–13 Hz) event-related desynchronization (ERD; an index of sensorimotor activation) while watching the movements of embodied or non-embodied rubber hands, which was preceded by an observation of the rubber hand with or without synchronous visuo-tactile stimuli. The illusory ownership of the fake hand was manipulated using visual continuity with (RHI) and without (non-RHI) a fake forearm. Resultantly, an ownership-dependent μ rhythm ERD was found when delivering visuo-tactile stimuli; a greater and more persistent μ rhythm ERD during the rubber hand movement was identified in the RHI in comparison to the non-RHI condition. However, no difference was observed between the two when observing the fake hand alone. These findings suggest the possibility that a self-related multisensory interaction between body representation (top-down processing) and visuo-tactile inputs (bottom-up processing) before a fake hand movement produces ownership-dependent sensorimotor activations during subsequent movement observations. |
| first_indexed | 2024-03-11T02:40:31Z |
| format | Article |
| id | doaj.art-2973a1ff212a458bad1f38ed92d8a473 |
| institution | Directory Open Access Journal |
| issn | 2076-3425 |
| language | English |
| last_indexed | 2024-03-11T02:40:31Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Brain Sciences |
| spelling | doaj.art-2973a1ff212a458bad1f38ed92d8a4732023-11-18T09:37:05ZengMDPI AGBrain Sciences2076-34252023-06-0113696910.3390/brainsci13060969Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile StimulationSatoshi Shibuya0Yukari Ohki1Department of Integrative Physiology, School of Medicine, Kyorin University, Tokyo 181-8611, JapanDepartment of Integrative Physiology, School of Medicine, Kyorin University, Tokyo 181-8611, JapanDuring rubber hand illusion (RHI), participants feel that a rubber (fake) hand is their own (i.e., embodiment of the rubber hand) if the unseen real hand and seen rubber hand are stroked synchronously (i.e., visuo-tactile stimuli). The RHI is also evoked if the real and rubber hands are placed in the same position (i.e., visual-proprioceptive congruency), which can be performed using a mirror setting. Using electroencephalography (EEG) and mirror settings, we compared μ rhythm (8–13 Hz) event-related desynchronization (ERD; an index of sensorimotor activation) while watching the movements of embodied or non-embodied rubber hands, which was preceded by an observation of the rubber hand with or without synchronous visuo-tactile stimuli. The illusory ownership of the fake hand was manipulated using visual continuity with (RHI) and without (non-RHI) a fake forearm. Resultantly, an ownership-dependent μ rhythm ERD was found when delivering visuo-tactile stimuli; a greater and more persistent μ rhythm ERD during the rubber hand movement was identified in the RHI in comparison to the non-RHI condition. However, no difference was observed between the two when observing the fake hand alone. These findings suggest the possibility that a self-related multisensory interaction between body representation (top-down processing) and visuo-tactile inputs (bottom-up processing) before a fake hand movement produces ownership-dependent sensorimotor activations during subsequent movement observations.https://www.mdpi.com/2076-3425/13/6/969body ownershiprubber hand illusion (RHI)event-related desynchronization (ERD)mu-rhythmelectroencephalography (EEG)hand movement |
| spellingShingle | Satoshi Shibuya Yukari Ohki Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation Brain Sciences body ownership rubber hand illusion (RHI) event-related desynchronization (ERD) mu-rhythm electroencephalography (EEG) hand movement |
| title | Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation |
| title_full | Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation |
| title_fullStr | Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation |
| title_full_unstemmed | Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation |
| title_short | Mu Rhythm Desynchronization while Observing Rubber Hand Movement in the Mirror: The Interaction of Body Representation with Visuo-Tactile Stimulation |
| title_sort | mu rhythm desynchronization while observing rubber hand movement in the mirror the interaction of body representation with visuo tactile stimulation |
| topic | body ownership rubber hand illusion (RHI) event-related desynchronization (ERD) mu-rhythm electroencephalography (EEG) hand movement |
| url | https://www.mdpi.com/2076-3425/13/6/969 |
| work_keys_str_mv | AT satoshishibuya murhythmdesynchronizationwhileobservingrubberhandmovementinthemirrortheinteractionofbodyrepresentationwithvisuotactilestimulation AT yukariohki murhythmdesynchronizationwhileobservingrubberhandmovementinthemirrortheinteractionofbodyrepresentationwithvisuotactilestimulation |