Article (Scientific journals)
Neural bases of inhibitory control: Combining transcranial magnetic stimulation and magnetic resonance imaging in alcohol-use disorder patients.
Quoilin, Caroline; Dricot, Laurence; Genon, Sarah et al.
2021In NeuroImage, 224, p. 117435
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Keywords :
Alcohol use disorder; Cortical thickness; Inhibitory control; Motor system; Neuroimaging; Transcranial magnetic stimulation
Abstract :
[en] Inhibitory control underlies the ability to inhibit inappropriate responses and involves processes that suppress motor excitability. Such motor modulatory effect has been largely described during action preparation but very little is known about the neural circuit responsible for its implementation. Here, we addressed this point by studying the degree to which the extent of preparatory suppression relates to brain morphometry. We investigated this relationship in patients suffering from severe alcohol use disorder (AUD) because this population displays an inconsistent level of preparatory suppression and major structural brain damage, making it a suitable sample to measure such link. To do so, 45 detoxified patients underwent a structural magnetic resonance imaging (MRI) and performed a transcranial magnetic stimulation (TMS) experiment, in which the degree of preparatory suppression was quantified. Besides, behavioral inhibition and trait impulsivity were evaluated in all participants. Overall, whole-brain analyses revealed that a weaker preparatory suppression was associated with a decrease in cortical thickness of a medial prefrontal cluster, encompassing parts of the anterior cingulate cortex and superior-frontal gyrus. In addition, a negative association was observed between the thickness of the supplementary area (SMA)/pre-SMA and behavioral inhibition abilities. Finally, we did not find any significant correlation between preparatory suppression, behavioral inhibition and trait impulsivity, indicating that they represent different facets of inhibitory control. Altogether, the current study provides important insight on the neural regions underlying preparatory suppression and allows highlighting that the excitability of the motor system represents a valuable read-out of upstream cognitive processes.
Disciplines :
Neurosciences & behavior
Author, co-author :
Quoilin, Caroline
Dricot, Laurence
Genon, Sarah ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et revalid. cogn.
de Timary, Philippe
Duque, Julie
Language :
English
Title :
Neural bases of inhibitory control: Combining transcranial magnetic stimulation and magnetic resonance imaging in alcohol-use disorder patients.
Publication date :
2021
Journal title :
NeuroImage
ISSN :
1053-8119
eISSN :
1095-9572
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
224
Pages :
117435
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright © 2020. Published by Elsevier Inc.
Available on ORBi :
since 14 October 2020

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