airs fail the ISI test</span>
0016 <span class="comment">%     or (2) the connection strength drops below a (heuristic) cutoff of 0.01.</span>
0017 <span class="comment">%</span>
0018 <span class="comment">%     The ISI test needs an idea of the expected refractory period to test</span>
0019 <span class="comment">%     for violations; as a default, it uses 1.5 times the width of the</span>
0020 <span class="comment">%     waveforms in the SPIKES structure.  To override this, define the</span>
0021 <span cla