Differences in Mu rhythm when seeing grasping/motor actions in a real context versus on screens
Andreu Sánchez, Celia (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat)
Martín-Pascual, Miguel Ángel (Universitat Autònoma de Barcelona. Departament de Comunicació Audiovisual i Publicitat)
Gruart, Agnès (Universidad Pablo de Olavide)
Delgado-García, José María (Universidad Pablo de Olavide)

Data:	2024
Descripció:	9 pàg.
Resum:	Mu rhythm (∼8-12 Hz) in the somatosensory cortex has traditionally been linked with doing and seeing motor activities. Here, we aimed to learn how the medium (physical or screened) in which motor actions are seen could impact on that specific brain rhythm. To do so, we presented to 40 participants the very same narrative content both in a one-shot movie with no cuts and in a real theatrical performance. We recorded subjects' brain activities with electroencephalographic (EEG) procedures, and analyzed Mu rhythm present in left (C3) and right (C4) somatosensory areas in relation to the 24 motor activities included in each visual stimulus (screen vs. reality) (24 motor and grasping actions x 40 participants x 2 conditions = 1920 trials). We found lower Mu spectral power in the somatosensory area after the onset of the motor actions in real performance than on-screened content, more pronounced in the left hemisphere. In our results, the sensorimotor Mu-ERD (event-related desynchronization) was stronger during the real-world observation compared to screen observation. This could be relevant in research areas where the somatosensory cortex is important, such as online learning, virtual reality, or brain-computer interfaces.
Ajuts:	Agencia Estatal de Investigación PID2021-122446NB-I00
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Motor actions ; Neurocinematics ; Reality vs. screen ; Visual perception
Publicat a:	Scientific reports, Vol. 14 Núm. 1 (2024) , art. 22921, ISSN 2045-2322

DOI: 10.1038/s41598-024-74453-x
PMID: 39358411

9 p, 1.6 MB

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