摘要
Objective:This paper is to investigate functional connectivity differences between the abacus experts and control groups by using nonlinear processing method spatiotemporal Lyapunov exponent.Methods:11 right-handed healthy control children and 12 abacus children were undergone functional magnetic resonance imaging(fMRI).After preprocessing fMRI data with SPM,linear and nonlinear methods for connectivity analysis were both employed.Results:Connectivity differences between the two groups were statistically P<0.05 by the correlation method,while the P value by the nonlinear method were P<0.01.Conclusion:There are significant differences between the two groups in functional connectivity of bilateral occipital lobes.The nonlinear method proposed here seems to be more specific compared with the common linear correlation method.
Objective： This paper is to investigate functional connectivity differences between the abacus experts and control groups by using nonlinear processing method spatiotemporal Lyapunov exponent. Methods： 11 right-handed healthy control children and 12 abacus children were undergone functional magnetic resonance imaging （fMRI）. After preprocessing fMRI data with SPM, linear and nonlinear methods for connectivity analysis were both employed. Results： Connectivity differences between the two groups were statistically P 〈 0.05 by the correlation method, while the P value by the nonlinear method were P 〈 0.01. Conclusion： There are significant differences between the two groups in functional connectivity of bilateral occipital lobes. The nonlinear method proposed here seems to be more specific compared with the common linear correlation method.
