Pulse width dependence of motor threshold and input–output curve characterized with controllable pulse parameter transcranial magnetic stimulation
نویسندگان
چکیده
منابع مشابه
Effect of coil orientation on strength–duration time constant and I-wave activation with controllable pulse parameter transcranial magnetic stimulation
OBJECTIVE To compare the strength-duration (S-D) time constants of motor cortex structures activated by current pulses oriented posterior-anterior (PA) or anterior-posterior (AP) across the central sulcus. METHODS Motor threshold and input-output curve, along with motor evoked potential (MEP) latencies, of first dorsal interosseus were determined at pulse widths of 30, 60, and 120 μs using a ...
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Transcranial Magnetic Stimulation (TMS) can be used to assess corticospinal, corticocortical and cortico-subcortical network physiology and function. In the motor system, TMS-induced cortical activation leads to peripheral muscle responses. Various motor functions can be characterized extensively by applying specific stimulation protocols. However, the clinical applications are limited by large...
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A full-sine (biphasic) pulse waveform is most commonly used for repetitive transcranial magnetic stimulation (TMS), but little is known about how variations in duration or amplitude of distinct pulse segments influence the effectiveness of a single TMS pulse to elicit a corticomotor response. Using a novel TMS device, we systematically varied the configuration of full-sine pulses to assess the ...
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BACKGROUND In Transcranial Magnetic Stimulation (TMS), the Motor Threshold (MT) is the minimum intensity required to evoke a liminal response in the target muscle. Because the MT reflects cortical excitability, the TMS intensity needs to be adjusted according to the subject's MT at the beginning of every TMS session. OBJECTIVE Shorten the MT estimation process compared to existing methods wit...
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In human motor cortex transcranial magnetic stimulation (TMS) has been used to identify short-interval intracortical inhibition (SICI) corresponding to gamma-aminobutyric acid type A (GABA(A)) effects and long-interval intracortical inhibition (LICI) and the cortical silent period (SP) corresponding to postsynaptic GABA(B) effects. Presynaptic GABA(B) effects, corresponding to disinhibition, ca...
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ژورنال
عنوان ژورنال: Clinical Neurophysiology
سال: 2013
ISSN: 1388-2457
DOI: 10.1016/j.clinph.2013.01.011