Moderate anxiety modifies the electromyographic activity of a forearm muscle during a time-reaction task in women.
Fiche publication
Date publication
mars 2017
Journal
Neuroscience letters
Auteurs
Membres identifiés du Cancéropôle Est :
Pr BOLMONT Benoît, Dr HAINAUT Jean-Philippe
Tous les auteurs :
Langlet C, Hainaut JP, Bolmont B
Lien Pubmed
Résumé
Arousal anxiety has a great impact on reaction time, physiological parameters and motor performance. Numerous studies have focused on the influence of anxiety on muscular activity during simple non ecologic task. We investigate the impact of a moderate state-anxiety (arousal stressor) on the specific component of a complex multi-joint ecologic movement during a reaction time task of auditory stimulus-response. Our objective is to know if central and peripheral voluntary motor processes were modulated in the same way by an arousal stressor. Eighteen women volunteers performed simple reaction time tasks of auditory stimulus-response. Video-recorded Stroop test with interferences was used to induced moderate state-anxiety. Electromyographic activity of the wrist extensor was recorded in order to analyse the two components of the reaction time: the premotor and motor time. In anxiogenic condition, an acceleration and an increase of muscular activity of the reaction time was obtained. This increase was due to a stronger muscle activity during the premotor time in the anxiogenic condition. Arousal anxiety has a different impact on central and peripheral voluntary motor processes. The modifications observed could be related to an increase in arousal related to a higher anxiety in order to prepare the body to act.
Mots clés
Anxiety, Motor time, Muscular activity, Premotor, Reaction time, Women
Référence
Neurosci Lett. 2017 03 16;643:1-7