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Title: The effect of transcranial direct current stimulation on perception of effort in an isolated isometric elbow flexion task
Authors: Nowicky, AV
Keywords: tDCS;Sensorimotor cortex;MEPs;TMS;Ergogenic action;Perception of effort;0-10 NRS effort rating;Elbox flexors
Issue Date: 2013
Publisher: Human Kinetics
Citation: Motor Control, 17(4), 412 - 426, 2013
Abstract: The purported ergogenic actions of transcranial direct current stimulation (tDCS) applied to motor cortex (M1) on force production and perception of effort were investigated using a 10-item numerical rating scale (0–10 NRS) in nonfatiguing bouts of a force-matching task utilizing isometric elbow flexion. Using a crossover design, 12 healthy volunteers received sham, anodal, and cathodal tDCS randomly for 10 min (1.5 mA, 62 ìA/cm2) to the left M1 in a double-blind manner. Cor- ticospinal excitability changes were also monitored using transcranial magnetic stimulation (TMS) with surface electromyography (sEMG) to monitor both motor evoked potentials (MEPs) and force-EMG from right m. biceps brachii and m. brachioradialis brachii. No significant differences between the verum and sham stimulation were obtained for elbow flexion maximum voluntary force, perception of effort, or sEMG. There were also no significant differences in MEP changes for the types of tDCS, which is consistent with reports that tDCS excitability effects are diminished during ongoing cognitive and motor activities.
Description: This is the author's manuscript as accepted for publication in Motor Control. The final published article is available from the link below, copyright @ 2013 Human Kinetics.
ISSN: 1087-1640
Appears in Collections:Community Health and Public Health
Dept of Clinical Sciences Research Papers

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