Extended Data Fig. 9: Comparison of the wave and neural mass models in capturing time-lagged properties of fMRI data.
a, Time-delay matrices from empirical data, simulated data using the wave model and simulated data using the neural mass model of the left hemisphere. Negative–zero–positive values are coloured as blue–white–red. b, Mean lags from the matrices in a (mean of each column) projected on the cortical surface. Negative–zero–positive values are coloured as blue–white–red. The scatter plots show the relationship of mean lags from empirical data and simulated data from the two models for 180 brain regions. The red line represents a linear fit with Pearson correlation coefficient r and one-sided spin-test p-value, pspin, estimated from 10,000 permutations. c, Similar to b but on the first principal component (PC1) of the matrices in a. The number above the surfaces (var) corresponds to the variance explained by the PC. d, Similar to c but on the second PC (PC2) of the matrices in a.
