Figure 1.

There was a significant reduction in mean short‐interval intracortical inhibition (SICI), between interstimulus intervals (ISI) 1 and 7 msec, in amyotrophic lateral sclerosis (ALS) patients when compared with neuromuscular controls. The reduction in SICI was comparable across the King’s clinical stages in ALS patients. NS, Nonsignificant; ***P < 0.001.