✦ LIBER ✦

Is the rhythm of physiological tremor involved in cortico-cortical interactions?

✍ Scribed by Jan Raethjen; Michael Lindemann; Andre Morsnowski; Matthias Dümpelmann; Roland Wenzelburger; Henning Stolze; Urban Fietzek; Gerd Pfister; Christian E. Elger; Jens Timmer; Günther Deuschl

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 384 KB
Volume: 19
Category: Article
ISSN: 0885-3185
DOI: 10.1002/mds.10686

No coin nor oath required. For personal study only.

✦ Synopsis

The function of low-frequency oscillations as correlates of physiological tremor in supplementary motor area (SMA) and M1 remains unclear. In epicortical recordings from M1 and SMA and surface electromyographic (EMG) recordings in an epileptic patient we found reproducibly significant coherence between all three recording sites in the 6- to 15-Hz band. The partial coherence between SMA and muscle, however, was not significant. There was a constant phase shift between SMA and M1 indicating synchronized activity. We conclude that the cortical correlates of physiological tremor may be involved in linking different cortical motor centers and might therefore play a role in cortical motor planning.

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