BRAIN STIMULATION, vol.14, no.1, pp.22-32, 2021 (SCI-Expanded)
Background: Short-interval intracortical inhibition (SICI), as measured by threshold-tracking as a function of inter-stimulus interval (ISI), has been proposed as a useful biomarker for amyotrophic lateral sclerosis (ALS), but its relationship to conventional amplitude measurements has not been established.