Abstract #3037
Comparative analysis of cortical activation associated to voluntary and electrically-evoked contractions
Jennifer Wegrzyk 1 , Jean-Philippe Ranjeva 1 , Sylviane Confort-Gouny 1 , Hlne Boudinet 1,2 , David Bendahan 1 , and Julien Gondin 1
1
Aix-Marseille Universit, CNRS, CRMBM
(Centre de Rsonance Magntique Biologique et Mdicale)
UMR 7339, Marseille, France,
2
CEMEREM,
APHM, Ple Imagerie, Marseille, France
In this BOLD fMRI study we illustrated that cerebral
activation patterns in healthy subjects were
significantly different between two neuromuscular
stimulation protocols (using either conventional or
wide-pulse, high-frequency parameters) and voluntary
contractions. Plantar flexions were performed under
isometric conditions at a given submaximal intensity
level inside a 1.5T scanner. The results show that the
brain activation was higher for wide-pulse,
high-frequency as compared to conventional
neuromuscular electrostimulation and closer to the
physiological brain activation pattern of voluntary
contractions.
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