Comparison of source locations between two MEGs used for hyperscanning

• Published in: Transactions of Japanese Society for Medical and Biological Engineering Vol. Annual59; no. Proc; pp. 647 - 649
• Main Authors: Shimojo, Atsushi, Takano, Kazuyoshi, Yokosawa, Koichi, Watanabe, Hayato, Ohnishi, Yoshitaka, Shiraishi, Hideaki
• Format: Journal Article
• Language: Japanese
• Published: Japanese Society for Medical and Biological Engineering 2021; 公益社団法人 日本生体医工学会
• ISSN: 1347-443X; 1881-4379
• DOI: 10.11239/jsmbe.Annual59.647

[Background and purpose] We constructed and experimented with a magnetoencephalography (MEG) hyperscanning system. However, it is necessary to confirm the data recorded by different MEGs can be directly compared. Therefore, we stimulated the primary sensory cortices of the same subject with two MEGs, and estimated the source activities.[Method] 101 ch custom-type MEG (Elekta-Neuromag) and 306 ch MEG (Vectorview, Elekta-Neuromag) were used. Auditory, visual, and somatosensory stimulations were performed respectively. [Result and discussion] The primary sensory cortex of the stimulated senses were activated. There was a slight variation in activated positions between those estimated by the two MEGs (< 20 mm), but they were located in the same brain regions within the Desikan-Killiany atlas (Desikan et al., 2006). This result suggests that the estimation of the synchronization using two MEGs is acceptable.