Počet záznamů: 1

Intermittent bilateral coherence in physiological and essential hand tremor

SYSNO ASEP	0474149
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Intermittent bilateral coherence in physiological and essential hand tremor
Tvůrce(i)	Chakraborty, Soma (FGU-C) Kopecká, J. (CZ) Šprdlík, Otakar (UTIA-B)_RID Hoskovcová, M. (CZ) Ulmanová, O. (CZ) Růžička, E. (CZ) Zápotocký, Martin (FGU-C)_{RID, ORCID}
Zdroj.dok.	Clinical Neurophysiology. - : Elsevier - ISSN 1388-2457 Roč. 128, č. 4 (2017), s. 622-634
Poč.str.	13 s.
Jazyk dok.	eng - angličtina
Země vyd.	IE - Irsko
Klíč. slova	physiological tremor ; essential tremor ; bilateral coupling ; coherence ; ballistocardiac impulse ; accelerometry ; wavelet analysis
Vědní obor RIV	FH - Neurologie, neurochirurgie, neurovědy
Obor OECD	Neurosciences (including psychophysiology
Vědní obor RIV – spolupráce	Ústav teorie informace a automatizace - Teorie a systémy řízení
CEP	GBP304/12/G069 GA ČR - Grantová agentura ČR
Institucionální podpora	FGU-C - RVO:67985823 ; UTIA-B - RVO:67985556
UT WOS	000397963400013
EID SCOPUS	85013212220
DOI	10.1016/j.clinph.2016.12.027
Anotace	We investigated the prevalence and the temporal structure of bilateral coherence in physiological (PT) and essential (ET) hand tremor. Triaxial accelerometric recordings from both hands in 30 healthy subjects and 34 ET patients were analyzed using spectral coherence and wavelet coherence methods. In 12 additional healthy subjects, the relation between the hand tremor and the chest wall acceleration was evaluated using partial coherence analysis. The majority of both PT and ET subjects displayed significant bilateral coherence. While in PT, bilateral coherence was most frequently found in resting hand position (97% of subjects), in ET the prevalence was comparable for resting (54%) and postural (49%–57%) positions. In both PT and ET, epochs of strong coherence lasting several to a dozen seconds were separated by intervals of insignificant coherence. In PT, bilateral coherence at the main tremor frequency (8–12 Hz) was coupled with the ballistocardiac rhythm. The oscillations of the two hands are intermittently synchronized in both PT and ET. We propose that in postural PT, bilateral coherence at the main tremor frequency arises from transient simultaneous entrainment of the left and right hand oscillations to ballistocardiac forcing. Bilateral coherence of hand kinematics provides a sensitive measure of synchronizing influences on the left and right tremor oscillators.
Pracoviště	Fyziologický ústav
Kontakt	Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400
Rok sběru	2018

Počet záznamů: 1