Simultaneously determining regional heterogeneity and connection directionality from neural activity and symmetric connection
Fig 2
Robustness of reconstruction in effective heterogeneity and asymmetry.
(A) The relative errors between ground truth and estimation of EC (Jacobian in Eq. 9) as functions of the global coupling strength G. (B and C) The relative errors of effective heterogeneity hi (B) and asymmetric SC Cij (C) revealed by the reconstruction method as functions of G. Red line represents reconstruction considering both heterogeneity and asymmetry. Blue line is baseline comparison ignoring asymmetry (B). Yellow line is baseline comparison ignoring heterogeneity (C). (D) The relative errors of Jacobian as function of noise strength σ. (E) The relative errors of asymmetric SC Cij (blue) and regional heterogeneity hi (red) as functions of σ. The colored lines show the mean relative errors across 10 simulations, with shaded areas indicating one standard deviation from the mean. Simulation length 50,000s.