label: Jerk-locked premyoclonus spikes
label_lc: jerk-locked premyoclonus spikes
description: "Jerk-locked averaging (JLA) is used to record the timing and distribution of brain activity preceding brisk involuntary movements such as those observed in patients with myoclonus. JLA is capable of revealing a premyoclonus spike in the absence of paroxysmal activity in the routine EEG."