Fig. 2
From: Tremor after long term lithium treatment; is it cortical myoclonus?
Results of JLA for 4 of the cases that were gluten positive (a), (b), (c), (d). A sharp biphasic transient appears in the contralateral central (a and b) and in the contralateral frontocentral EEG channel preceding the onset of the averaged EMG discharges in (c and d). The cortico-muscular latencies are shown at a slower sweep time in the relevant Additional file 1. APB = abductor pollicis brevis, BB=Biceps brachii, FCU = flexor carpi ulnaris, EDC = extensor digitorum communis, JLA = jerk-locked averaging, SEP = somatosensory evoked potentials, TB = triceps brachii