This is the readme for the IGOR Pro experiment file associated
with

Powers RK, Dai Y, Bell BM, Percival DB, Binder MD (2005)
Contributions of the input signal and prior activation
history to the discharge behaviour of rat motoneurones.
J Physiol 562:707-724

Usage:  merely open the binary file, Threshold-crossing_Fig4A_E, 
in IGOR Pro and it will reproduce figures 4A, 4E from the paper:



See text supplied when the experiment is opened for more
information.