Proactive modulation of long-interval intracortical inhibition during response inhibition
نویسندگان
چکیده
منابع مشابه
Influence of short-interval intracortical inhibition on short-interval intracortical facilitation in human primary motor cortex.
Using the paired-pulse paradigm, transcranial magnetic stimulation (TMS) has revealed much about the human primary motor cortex (M1). A preceding subthreshold conditioning stimulus (CS) inhibits the excitability of the motor cortex, which is named short-interval intracortical inhibition (SICI). In contrast, facilitation is observed when the first pulse (S1) is followed by a second one at thresh...
متن کاملInfluence of short - interval intracortical inhibition on short - interval intracortical 1
27 Using the paired-pulse paradigm, transcranial magnetic stimulation (TMS) has 28 revealed much about the human primary motor cortex (M1). A preceding 29 subthreshold conditioning stimulus (CS) inhibits the excitability of the motor cortex, 30 which is named short-interval intracortical inhibition (SICI). In contrast, facilitation is 31 observed when the first pulse (S1) is followed by a secon...
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Volitional inhibition is the voluntary prevention of a prepared movement. Here we ask whether primary motor cortex (M1) is a site of convergence of cortical activity associated with movement preparation and volitional inhibition. Volitional inhibition was studied by presenting a stop signal before execution of an anticipated response that requires a key lift to intercept a revolving dial. Motor...
متن کاملDissecting the Mechanisms Underlying Short-Interval Intracortical Inhibition Using Exercise
Recently, 2 physiologically distinct phases of short-interval intracortical inhibition (SICI) have been identified, a larger phase at interstimulus interval (ISI) 3 ms and a smaller phase at ISI 1 ms. While the former is mediated by synaptic processes, the mechanisms underlying the first phase of SICI remain a matter of debate. Separately, it is known that fatiguing hand exercise reduces SICI, ...
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Previous studies have shown that intracortical inhibition (ICI) plays an important role in shaping the output from primary motor cortex, and that ICI may be impaired in people with Focal Hand Dystonia (FHD). This study explored the muscle-specificity and temporal modulation of ICI during the performance of a phasic index finger flexion task. Eight control subjects and seven with FHD were asked ...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2016
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00144.2016