Head position-based electrotactile tongue biofeedback affects postural responses to Achilles tendon vibration in humans

Experimental Brain Research
Nicolas Vuillerme, Rémy Cuisinier

Abstract

The purpose of the present experiment was to investigate whether postural responses to ankle proprioceptive perturbation Achilles tendon vibration were affected by the availability of augmented sensory information about head orientation/motion with respect to gravitational vertical, i.e., normally provided by the vestibular system. To achieve this goal, ten standing subjects were exposed to Achilles tendon vibration in two No Biofeedback and Biofeedback conditions. The No Biofeedback condition served as a control condition. In the Biofeedback condition, subjects performed the postural task using a head position-based electrotactile tongue-placed biofeedback system. Center of foot pressure (CoP) displacements were recorded using a force platform. Results showed that (1) Achilles tendon vibration increased CoP displacements in the No Biofeedback condition and (2) this destabilizing effect was less accentuated in the Biofeedback condition. These results are consistent with and discussed in terms of sensory re-weighting mechanisms involved in postural control. In the condition of Achilles tendon vibration, which renders ankle proprioceptive information less reliable for controlling posture, the central nervous system was able to in...Continue Reading

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Citations

Jul 13, 2011·Experimental Brain Research·Saritha M RadhakrishnanIoannis G Amiridis
Feb 4, 2012·Acta Biotheoretica·Abdessalem Chekhchoukh, Nicolas Glade
Oct 31, 2012·PloS One·Xiaodi LiangJinhu Guo
Apr 14, 2016·Somatosensory & Motor Research·David R TempleCharles S Layne
Sep 28, 2017·Topics in Stroke Rehabilitation·Christina Zong-Hao MaWinson Chiu-Chun Lee
Feb 20, 2015·Multisensory Research·Bruno DiotNicolas Vuillerme
Nov 8, 2019·PloS One·Anirudh SainiYun Seong Song

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