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  • Title: Motor cortex excitability in restless legs syndrome.
    Author: Scalise A, Cadore IP, Gigli GL.
    Journal: Sleep Med; 2004 Jul; 5(4):393-6. PubMed ID: 15222998.
    Abstract:
    BACKGROUND AND PURPOSE: A review of the literature shows that the transcranial magnetic stimulation (TMS) is a useful neurophysiological tool to investigate the pathophysiology of the restless legs syndrome (RLS). In this study we used TMS to define motor cortical excitability in RLS subjects. PATIENTS AND METHODS: Six RLS patients and two healthy control subjects underwent TMS (single and paired) examination using two protocols: (1) the evaluation of motor cortical excitability changes occurring at various times after a repetitive finger movement task; (2) the evaluation of the time course of intracortical motor activity tested with pairs of magnetic stimuli applied at inter-stimulus intervals of 1-6 ms. RESULTS: Subjects affected by RLS do not show the normal fluctuations of motor cortical excitability usually found after a bimanual finger movement task. The intracortical inhibition was reduced in RLS subjects. CONCLUSIONS: These results compared with the other studies suggest a modification in the central circuits and suppose a reduction or alteration in the cortical plasticity.
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