Dynamic influence of wrist flexion and extension on the intracortical inhibition of the first dorsal interosseus muscle during precision grip

Brain Research
Martin Gagné, Cyril Schneider

Abstract

This work questioned further the influence of wrist movements on the control of precision grip. Seated subjects wearing a full-arm orthosis with the wrist and hand free were instructed to maintain a thumb/index finger opposition corresponding to 15% of maximal voluntary contraction for the first dorsal interosseus (FDI). Paired-pulse transcranial magnetic stimulation eliciting conditioned MEPs of FDI was used to determine the modulation of short intracortical inhibition (SICI) during cyclic active and passive wrist flexion and extension and during a static condition (no wrist movement, hand in the neutral position). The FDI active motor threshold (AMT) and the conditioning stimulus (0.8 AMT) were assessed in each series of FDI SICI measurements and the test stimulus (TS) was adjusted to match the amplitudes of test FDI MEPs across conditions. An increase of FDI background EMG during active wrist flexion compared to extension in some subjects did not influence FDI SICI as tested at matched EMG levels in the static condition. FDI SICI was reduced during wrist flexion (whether active or passive) compared to wrist extension, the latter being of equivalent FDI SICI as in the static condition. We suggest that wrist flexion and precis...Continue Reading

References

Mar 1, 1992·The Journal of Physiology·E Palmer, P Ashby
Dec 1, 1990·Brain : a Journal of Neurology·J G ColebatchC D Marsden
Apr 1, 1997·Experimental Brain Research·H DevanneC Capaday
Jul 28, 1999·Experimental Brain Research·M C Ridding, J C Rothwell
Nov 4, 2000·The Journal of Physiology·C D MacKinnon, J C Rothwell
Aug 3, 2001·The Journal of Physiology·J M Aimonetti, J B Nielsen
Oct 12, 2001·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·C TrompettoG Abbruzzese
Aug 23, 2002·Experimental Brain Research·Cyril SchneiderCharles Capaday
Apr 1, 2004·Cerebral Cortex·Cathy M Stinear, Winston D Byblow
Nov 2, 2004·Experimental Brain Research·F GinanneschiA Rossi
Feb 7, 2006·Brain Research·Federica GinanneschiAlessandro Rossi
Mar 15, 2006·Movement Disorders : Official Journal of the Movement Disorder Society·Marion Simonetta-MoreauSabine Meunier
Jul 17, 2007·Brain Research·Martin Gagné, Cyril Schneider

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Citations

Feb 9, 2012·Experimental Brain Research·Hugo Massé-AlarieCyril Schneider
Oct 8, 2013·Neurophysiologie clinique = Clinical neurophysiology·L D Beaulieu, C Schneider
Oct 25, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Véronique H FlamandCyril Schneider
Jun 1, 2011·Neurophysiologie clinique = Clinical neurophysiology·H Massé-Alarie, C Schneider
Jan 18, 2014·Journal of the Neurological Sciences·L D BeaulieuC Schneider
Jun 1, 2016·Spine·Sabina Hotz-BoendermakerBarry K Humphreys
Apr 23, 2016·Journal of Applied Physiology·Awad M AlmuklassRoger M Enoka
Feb 18, 2021·Physiology·Roger M Enoka, Dario Farina

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