2016
DOI: 10.1016/j.neuroimage.2015.10.007
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Comparison of the two cerebral hemispheres in inhibitory processes operative during movement preparation

Abstract: Neuroimaging and neuropsychological studies suggest that in right-handed individuals, the left hemisphere plays a dominant role in praxis, relative to the right hemisphere. However hemispheric asymmetries assessed with transcranial magnetic stimulation (TMS) has not shown consistent differences in corticospinal (CS) excitability of the two hemispheres during movements. In the current study, we systematically explored hemispheric asymmetries in inhibitory processes that are manifest during movement preparation … Show more

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Cited by 49 publications
(79 citation statements)
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References 63 publications
(90 reference statements)
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“…Interestingly, the MEP data revealed that this behavioral gain was associated with a strengthened suppression of motor activity at the onset time of the imperative signal. That is, although MEPs were systematically suppressed at this time, as frequently reported in the past (Klein et al, 2012, 2016; Greenhouse et al, 2015b; Bestmann and Duque, 2016; Quoilin et al, 2016; Wilhelm et al, 2016), this effect was much stronger when conflict was expected than when it was not. Besides, we also found that, during actions selection, the motor representations were less affected by the presence of irrelevant distractors.…”
Section: Introductionsupporting
confidence: 75%
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“…Interestingly, the MEP data revealed that this behavioral gain was associated with a strengthened suppression of motor activity at the onset time of the imperative signal. That is, although MEPs were systematically suppressed at this time, as frequently reported in the past (Klein et al, 2012, 2016; Greenhouse et al, 2015b; Bestmann and Duque, 2016; Quoilin et al, 2016; Wilhelm et al, 2016), this effect was much stronger when conflict was expected than when it was not. Besides, we also found that, during actions selection, the motor representations were less affected by the presence of irrelevant distractors.…”
Section: Introductionsupporting
confidence: 75%
“…This indicates that MEPs were suppressed even before the participants had detected the presence (or absence) of incongruent flankers. Such a suppression of MEPs at TMS IMP has been reported in many other RT tasks; it has usually been related to impulse control as it is thought to help prevent responses from being released prematurely (Klein et al, 2012, 2016; Duque et al, 2013, 2014; Labruna et al, 2014; Bestmann and Duque, 2016). …”
Section: Discussionmentioning
confidence: 73%
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“…MEP LEFT preceding a right hand response) for the forthcoming response. In fact, the selected condition seemed to be associated with less MEP suppression than usually reported in the past using a similar task version [2, 10, 11, 19]. Future experiments are clearly required to identify the causes of this discrepancy.…”
Section: Discussionmentioning
confidence: 74%