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Optical mapping of effective brain networks during the tangram task
Hu,Zhishan1,2; Lam,Keng Fong1,2; Yuan,Zhen1,2
Conference NameSymposium on Clinical and Translational Neurophotonics 2020 held at SPIE BiO Conference
Source PublicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Conference DateFEB 01, 2020
Conference PlaceSan Francisco, CA

Although the neural basis underlying visuospatial reasoning has been widely explored by neuroimaging techniques, the brain activation patterns during naturalistic visuospatial reasoning such as tangram remains unclear. In this study, the directional functional connectivity of fronto-parietal networks during the tangram task was carefully inspected by using combined functional near-infrared spectroscopy (fNIRS) and conditional Granger causality analysis (GCA). Meanwhile, the causal networks during the traditional spatial reasoning task were also characterized to exhibit the differences with those during the tangram task. We discovered that the tangram task in a natural environment showed enhanced activation in the fronto-parietal regions, particularly the frontal cortex. In addition, a strong directional connectivity from the right prefrontal cortex to left angular gyrus was detected for the complex spatial reasoning condition of spatial reasoning task, whereas no effective connectivity was identified between the frontal and parietal cortices during the tangram task. Further correlation analyses showed that the behavioral performance in the spatial reasoning rather than the tangram task manifested the relationship with the connectivity between the frontal and parietal cortex. Our findings demonstrate that the tangram task measures a different aspect of the visuospatial reasoning ability which requires more trial-and-error strategies and creative thinking rather than inductive reasoning. In particular, the frontal cortex is mostly involved in tangram puzzle-solving, whereas the interaction between frontal and parietal cortices might be disrupted by the hands-on experience during the tangram task. Our study also indicates that conditional GCA combined with fNIRS neuroimaging technique is a robust tool for constructing the causal networks associated with natural visuospatial reasoning, which paves a new avenue for an improved understanding of the neural mechanism underlying tangram.

KeywordBrain Networks Fnirs Granger Causality Tangram Visuospatial Reasoning
URLView the original
Indexed ByCPCI-S
WOS Research AreaNeurosciences & Neurology ; Optics
WOS SubjectNeurosciences ; Optics
WOS IDWOS:000547770500002
Scopus ID2-s2.0-85082128201
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Document TypeConference paper
CollectionFaculty of Health Sciences
Affiliation1.Centre for Cognition and Brain Sciences,University of Macau,Macao
2.Faculty of Health Sciences,University of Macau,Macao
First Author AffilicationUniversity of Macau;  Faculty of Health Sciences
Recommended Citation
GB/T 7714
Hu,Zhishan,Lam,Keng Fong,Yuan,Zhen. Optical mapping of effective brain networks during the tangram task[C],2019.
APA Hu,Zhishan,Lam,Keng Fong,&Yuan,Zhen.(2019).Optical mapping of effective brain networks during the tangram task.Progress in Biomedical Optics and Imaging - Proceedings of SPIE,11225.
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