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Article

Motor Cortical Activity during Observing a Video of Real Hand Movements versus Computer Graphic Hand Movements: An MEG Study

1
Department of Occupational Therapy and Graduate Institute of Behavioral Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
2
Healthy Aging Research Center, Chang Gung University, Taoyuan 33302, Taiwan
3
Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou 33305, Taiwan
4
Department of Physical Medicine and Rehabilitation, Cathay General Hospital, Taipei 10630, Taiwan
5
School of Physical Therapy and Graduate Institute of Rehabilitation Science, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
6
School of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
7
Department of Psychiatry, Chang Gung Memorial Hospital, Linkou 33305, Taiwan
*
Authors to whom correspondence should be addressed.
Brain Sci. 2021, 11(1), 6; https://doi.org/10.3390/brainsci11010006
Received: 2 November 2020 / Revised: 21 December 2020 / Accepted: 21 December 2020 / Published: 23 December 2020
(This article belongs to the Collection Collection on Systems Neuroscience)
Both action observation (AO) and virtual reality (VR) provide visual stimuli to trigger brain activations during the observation of actions. However, the mechanism of observing video movements performed by a person’s real hand versus that performed by a computer graphic hand remains uncertain. We aimed to investigate the differences in observing the video of real versus computer graphic hand movements on primary motor cortex (M1) activation by magnetoencephalography. Twenty healthy adults completed 3 experimental conditions: the resting state, the video of real hand movements (VRH), and the video of computer graphic hand movements (CGH) conditions with the intermittent electrical stimuli simultaneously applied to the median nerve by an electrical stimulator. The beta oscillatory activity (~20 Hz) in the M1 was collected, lower values indicating greater activations. To compare the beta oscillatory activities among the 3 conditions, the Friedman test with Bonferroni correction (p-value < 0.017 indicating statistical significance) were used. The beta oscillatory activities of the VRH and CGH conditions were significantly lower than that of the resting state condition. No significant difference in the beta oscillatory activity was found between the VRH and CGH conditions. Observing hand movements in a video performed by a real hand and those by a computer graphic hand evoked comparable M1 activations in healthy adults. This study provides some neuroimaging support for the use of AO and VR in rehabilitation, but no differential activations were found. View Full-Text
Keywords: action observation; virtual reality; magnetoencephalography; primary motor cortex action observation; virtual reality; magnetoencephalography; primary motor cortex
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MDPI and ACS Style

Hsieh, Y.-W.; Lee, M.-T.; Lin, Y.-H.; Chuang, L.-L.; Chen, C.-C.; Cheng, C.-H. Motor Cortical Activity during Observing a Video of Real Hand Movements versus Computer Graphic Hand Movements: An MEG Study. Brain Sci. 2021, 11, 6. https://doi.org/10.3390/brainsci11010006

AMA Style

Hsieh Y-W, Lee M-T, Lin Y-H, Chuang L-L, Chen C-C, Cheng C-H. Motor Cortical Activity during Observing a Video of Real Hand Movements versus Computer Graphic Hand Movements: An MEG Study. Brain Sciences. 2021; 11(1):6. https://doi.org/10.3390/brainsci11010006

Chicago/Turabian Style

Hsieh, Yu-Wei, Meng-Ta Lee, Yu-Hsuan Lin, Li-Ling Chuang, Chih-Chi Chen, and Chia-Hsiung Cheng. 2021. "Motor Cortical Activity during Observing a Video of Real Hand Movements versus Computer Graphic Hand Movements: An MEG Study" Brain Sciences 11, no. 1: 6. https://doi.org/10.3390/brainsci11010006

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