PMC3656631_01
Partial surface EMG tracing of the flexor (top) and extensor (bottom) carpi radialis longus muscles during re-emergent tremor showing asynchronous activity in case 1.. Note: The entire latency period could not be shown in this tracing.
ccrep-6-2013-067f1.jpg
PMC3656631_01_ccrep-6-2013-067f1.jpg
f1-ccrep-6-2013-067
Contractions were asynchronous (Fig. 1).
PMC3656631_02
(A) Surface EMG evaluation showing 6 Hz biceps (top) and triceps synchronous postural tremor of the right elbow in case 2. (B) Surface EMG evaluation of left flexor (top) and extensor pollicis brevis muscles showing 7 Hz synchronous thumb flexion and extension postural tremor without latency in case 3. (C) Surface EMG evaluation left flexor (top) and extensor pollicis brevis muscles showing 7 Hz synchronous thumb flexion and extension rest tremor in case 3.
ccrep-6-2013-067f2.jpg
PMC3656631_03_ccrep-6-2013-067f2.jpg
f2-ccrep-6-2013-067
EMG evaluation of the left flexor and extensor pollicis brevis muscles revealed a 7 Hz synchronous postural tremor (Fig. 2B) and a 7 Hz synchronous rest tremor (Fig. 2C).
PMC3656631_03
(A) Surface EMG evaluation showing 6 Hz biceps (top) and triceps synchronous postural tremor of the right elbow in case 2. (B) Surface EMG evaluation of left flexor (top) and extensor pollicis brevis muscles showing 7 Hz synchronous thumb flexion and extension postural tremor without latency in case 3. (C) Surface EMG evaluation left flexor (top) and extensor pollicis brevis muscles showing 7 Hz synchronous thumb flexion and extension rest tremor in case 3.
ccrep-6-2013-067f2.jpg
PMC3656631_03_ccrep-6-2013-067f2.jpg
f2-ccrep-6-2013-067
EMG evaluation of the left flexor and extensor pollicis brevis muscles revealed a 7 Hz synchronous postural tremor (Fig. 2B) and a 7 Hz synchronous rest tremor (Fig. 2C).