Figure 5 code is not for Figure 5.

[adamgcraig]

In "190565/CODE FOR FIGURE 5 (USER SUPPLIED SUPERVISOR)/IZFORCEMOVIE.m", the description reads,
"% Network of Izhikevich Neurons learns a song bird signal with a clock
% input. Note that you have to supply your own supervisor here due to file
% size limitations. The supervisor, zx should be a matrix of m x nt dimensional, where
% m is the dimension of the supervisor and nt is the number of time steps.
% RLS is applied until time T/2. The HDTS is stored as variable z2. Note
% that the code is written for an 8 second supervisor, nt should equal the
% length of z2."
The code is identical to that in "190565/CODE FOR FIGURE 4 (USER SUPPLIED SUPERVISOR)/IZSONGBIRDFORCE.m" except for the hardcoded length of the supervisor.
Neither script actually produces any of the images in figure 4 or figure 5 of the paper
Nicola, W., & Clopath, C. (2017).
Supervised learning in spiking neural networks with FORCE training.
Nature communications, 8(1), 1-15.
In particular, the "CODE FOR FIGURE 5" does not include any code for an internally generated HDTS.