Fig. 16

Evolution of the z-score matrix of the share of edges between \(f_{AI}\) quartiles. The first line, corresponding to the period 1970–1987, refers to the situation where the quartile \(Q_2\) has not yet emerged in our dataset. The separation of \(\overline{Q}\) and the other quartiles \(Q_i\)’s occurs qualitatively in the period 1988–1997, when \(Q_2\) was emerging and was beginning to publish in neuroscience. The ending period spanning from 1998–2010, which concentrates 91% of the 13,786,616 unweighted single edges in the temporal collaboration network TCN, is very similar to the configuration shown in the main text, especially in Fig. 13 which was computed on the basis of all the period 1970–2019