Fig. 7.

Gradual loss of syntax with efference copy connections. (a) Mean synaptic weights of the efference copy connections from each synfire chain (SFC_A, blue; SFC_B, red; SFC_C, cyan; SFC_D, yellow) to the corresponding auditory sub-networks. The auditory feedback is suppressed at t _df = 8,000 s and restored at 16,000 s (vertical black lines). (b) Sequencing stereotype (S _⋆, red dots) and average transition entropy (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\hat{H}$\end{document}, black dots) evaluated in bins of 100 s. The red and black curves are power law fits to the data