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Updated: Jun 28, 2026

Myo-mechanical Analysis of Isolated Skeletal Muscle
Published on: February 23, 2011
Time-frequency analysis reveals decreased high-frequency oscillations in writer's cramp
Zoé Cimatti1, Denis P Schwartz, Frédéric Bourdain
1Pierre & Marie Curie University, Paris, France. cimatti@chups.jussieu.fr
Abstract:
High-frequency oscillations (HFO) have been suggested to reflect the activity of thalamocortical and/or intracortical neurons bursting at high frequencies. These circuits seem to be involved in pathophysiological mechanisms of focal dystonia. In healthy subjects, we characterized the spectrotemporal properties of HFO patterns evoked by dominant-hand median-nerve stimulation, using magnetoencephalography coupled with time-frequency analysis. Then, we investigated HFO in patients with writer's cramp and found that HFO patterns are strongly decreased in power and disorganized in time. This supports the assumption that abnormal HFOs reflect pathophysiological mechanisms occurring in focal dystonia, possibly resulting from a dysfunction of somatosensory processing.
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