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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Clin Neurophysiol. 2011 May 26;122(12):2426–2432. doi: 10.1016/j.clinph.2011.03.033

Figure 1.

Figure 1

Surface EMG rest discharges from a PD subject (top), and surface EMG rest discharges and their Fast-Fourier Transform (FFT) averaged spectra from an ILBD subject (bottom).

Top-Surface EMG polygraphy of left wrist flexors and left abductor pollicis brevis from a PD subject. Bottom-Surface EMG polygraphy of left wrist flexors and left abductor pollicis brevis and their FFT averaged spectra show a distinct at about 5 hertz for both muscles from an ILBD Subject. Note that the PD rest tremor discharges are much larger than for the ILBD rest tremor discharges that have no visible rest tremor.