Figure 4. Firing properties of WT and SOD1G93A motoneurons.
(A) Relationship between recruitment current and input conductance of WT (blue circles) vs. SOD1G93A (red diamonds) motoneurons. (B) Comparison of the current required to elicit the first spike on a ramp of current (recruitment current) of WT (blue box, circles) vs. SOD1G93A (red box, diamonds) motoneurons. (C) Comparison of the distance between the resting membrane potential and the voltage threshold for spiking (∆V) of WT (blue box, circles) vs. SOD1G93A (red box, diamonds) motoneurons. (D) Comparison of the F-I curve gains (slope of the frequency versus injected current curve measured in the primary range) of WT (blue box, circles) vs. SOD1G93A (red box, diamonds) motoneurons. In all panels, the definition of the box-and-whisker plots is the same as in Figure 3.