Vestibular contributions across the execution of a voluntary forward step

Experimental Brain Research
Leah R BentBradford J McFadyen

Abstract

This work addressed the influence of information arising from the vestibular system on the dynamic control of a forward step. Six subjects performed the stepping task with their eyes closed under three conditions of bipolar, binaural galvanic vestibular stimulation (GVS), including (1) no GVS, (2) GVS with the anode electrode on the side of the swing limb, and (3) GVS with the anode electrode on the side of the stance limb. GVS was delivered 1,500 ms prior to a cue to step. Ground reaction forces were collected from three force platforms and movement was recorded from IRED markers placed bilaterally on the body. The results showed that, following slight deviations caused by GVS onset, the step initiation behaviour was unaffected, but lateral deviations were found during the latter, more dynamic, phases of stepping for centre of mass trajectories, time integrals of the centre of pressure displacement and upper body roll. These findings showed that vestibular information is used differently across the execution of a step without vision. While the initiation phase is run in a feedforward manner without vestibular influence, vestibular information appears to be upregulated during the more dynamic phases. Also, the level of up-regul...Continue Reading

Citations

Jul 21, 2005·Experimental Brain Research·Nandini Deshpande, Aftab E Patla
Oct 17, 2009·Experimental Brain Research·Hélène RugetLaurence Mouchnino
Jul 20, 2010·Experimental Brain Research·Simone B BortolamiJames R Lackner
Nov 3, 2005·Journal of Experimental Psychology. Human Perception and Performance·Richard M Wilkie, John P Wann
May 8, 2003·IEEE Engineering in Medicine and Biology Magazine : the Quarterly Magazine of the Engineering in Medicine & Biology Society·Aftab E Patla
Apr 16, 2003·Experimental Brain Research·Franck MarsAnatol G Feldman
Apr 23, 2004·Journal of Neurophysiology·Leah R BentBradford J McFadyen
Aug 23, 2018·The Quarterly Journal of Experimental Psychology : QJEP·Tanya Karn, Michael E Cinelli
Dec 1, 2006·Experimental Brain Research·Bradford J McFadyenJ Timothy Inglis
Jul 12, 2005·Exercise and Sport Sciences Reviews·Leah R BentJ Timothy Inglis
Jan 10, 2017·Frontiers in Human Neuroscience·Matthew J Bancroft, Brian L Day
May 11, 2018·European Journal of Physical and Rehabilitation Medicine·Sonia BonnìAntonella Peppe
Jan 1, 2021·Archives of Physical Medicine and Rehabilitation·Marco TramontanoGiovanni Morone
Dec 29, 2020·Complementary Medicine Research·Marco TramontanoChristian Lunghi

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