Discrete and effortful imagined movements do not specifically activate the autonomic nervous system. - Archive ouverte HAL Access content directly
Journal Articles PLoS ONE Year : 2009

Discrete and effortful imagined movements do not specifically activate the autonomic nervous system.

(1) , (2) , (2) , (1)
1
2

Abstract

BACKGROUND: The autonomic nervous system (ANS) is activated in parallel with the motor system during cyclical and effortful imagined actions. However, it is not clear whether the ANS is activated during motor imagery of discrete movements and whether this activation is specific to the movement being imagined. Here, we explored these topics by studying the baroreflex control of the cardiovascular system. METHODOLOGY/PRINCIPAL FINDINGS: Arterial pressure and heart rate were recorded in ten subjects who executed or imagined trunk or leg movements against gravity. Trunk and leg movements result in different physiological reactions (orthostatic hypotension phenomenon) when they are executed. Interestingly, ANS activation significantly, but similarly, increased during imagined trunk and leg movements. Furthermore, we did not observe any physiological modulation during a control mental-arithmetic task or during motor imagery of effortless movements (horizontal wrist displacements). CONCLUSIONS/SIGNIFICANCE: We concluded that ANS activation during motor imagery is general and not specific and physiologically prepares the organism for the upcoming effortful action.
Fichier principal
Vignette du fichier
journal.pone.0006769.pdf (353.19 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

inserm-00694534 , version 1 (04-05-2012)

Identifiers

Cite

Laurent Demougeot, Hervé Normand, Pierre Denise, Charalambos Papaxanthis. Discrete and effortful imagined movements do not specifically activate the autonomic nervous system.. PLoS ONE, 2009, 4 (8), pp.e6769. ⟨10.1371/journal.pone.0006769⟩. ⟨inserm-00694534⟩
126 View
283 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More