Scaling analysis of the effects of load on hand tremor movements in essential tremor
Само за регистроване кориснике
2011
Аутори
Blesić, SuzanaStratimirović, Đorđe
Milošević, S.
Marić, J.
Kostić, Vladimir S.
Ljubisavljević, Miloš
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this paper we have used the Wavelet Transform (WT) and the Detrended Fluctuation Analysis (DFA) methods to analyze hand tremor movements in essential tremor (ET), in two different recording conditions (before and after the addition of wrist-cuff load). We have analyzed the time series comprised of peak-to-peak (PtP) intervals, extracted from regions around the first three main frequency components of the power spectra (PwS) of the recorded tremors, in order to substantiate results related to the effects of load on ET, to distinguish between multiple sources of ET, and to separate the influence of peripheral factors on ET. Our results show that, in ET, the dynamical characteristics, that is, values of respective scaling exponents, of the main frequency component of recorded tremors change after the addition of load. Our results also show that in all the observed cases the scaling behavior of the calculated functions changes as well the calculated WT scalegrams and DFA functions displ...ay a shift in the position of the crossover when the load is added. We conclude that the difference in behavior of the WT and DFA functions between different conditions in ET could be associated with the expected pathology in ET, or with some additional mechanism that controls movements in ET patients, and causes the observed changes in scaling behavior.
Кључне речи:
Tremor / Essential tremor / Load / Wavelet transform analysis / DFA methodИзвор:
Physica A-Statistical Mechanics & its Applications, 2011, 390, 10, 1741-1746Издавач:
- Elsevier, Amsterdam
Финансирање / пројекти:
- Фазни прелази и карактеризација неорганских и органских система (RS-MESTD-Basic Research (BR or ON)-171015)
- Неинвазивна модулација кортикалне ексцитабилности и пластицитета - Развој метода неинвазивне неуромодулације централног нервног система у испитивања физиолошких механизама, дијагностици и терапији (RS-MESTD-Basic Research (BR or ON)-175012)
- Истраживање клиничких и генетичких корелација моторних и немоторних испољавања болести невољних покрета (RS-MESTD-MPN2006-2010-145057)
DOI: 10.1016/j.physa.2010.12.037
ISSN: 0378-4371
WoS: 000289335700005
Scopus: 2-s2.0-79952620212
Институција/група
Institut za medicinska istraživanjaTY - JOUR AU - Blesić, Suzana AU - Stratimirović, Đorđe AU - Milošević, S. AU - Marić, J. AU - Kostić, Vladimir S. AU - Ljubisavljević, Miloš PY - 2011 UR - http://rimi.imi.bg.ac.rs/handle/123456789/342 AB - In this paper we have used the Wavelet Transform (WT) and the Detrended Fluctuation Analysis (DFA) methods to analyze hand tremor movements in essential tremor (ET), in two different recording conditions (before and after the addition of wrist-cuff load). We have analyzed the time series comprised of peak-to-peak (PtP) intervals, extracted from regions around the first three main frequency components of the power spectra (PwS) of the recorded tremors, in order to substantiate results related to the effects of load on ET, to distinguish between multiple sources of ET, and to separate the influence of peripheral factors on ET. Our results show that, in ET, the dynamical characteristics, that is, values of respective scaling exponents, of the main frequency component of recorded tremors change after the addition of load. Our results also show that in all the observed cases the scaling behavior of the calculated functions changes as well the calculated WT scalegrams and DFA functions display a shift in the position of the crossover when the load is added. We conclude that the difference in behavior of the WT and DFA functions between different conditions in ET could be associated with the expected pathology in ET, or with some additional mechanism that controls movements in ET patients, and causes the observed changes in scaling behavior. PB - Elsevier, Amsterdam T2 - Physica A-Statistical Mechanics & its Applications T1 - Scaling analysis of the effects of load on hand tremor movements in essential tremor EP - 1746 IS - 10 SP - 1741 VL - 390 DO - 10.1016/j.physa.2010.12.037 ER -
@article{ author = "Blesić, Suzana and Stratimirović, Đorđe and Milošević, S. and Marić, J. and Kostić, Vladimir S. and Ljubisavljević, Miloš", year = "2011", abstract = "In this paper we have used the Wavelet Transform (WT) and the Detrended Fluctuation Analysis (DFA) methods to analyze hand tremor movements in essential tremor (ET), in two different recording conditions (before and after the addition of wrist-cuff load). We have analyzed the time series comprised of peak-to-peak (PtP) intervals, extracted from regions around the first three main frequency components of the power spectra (PwS) of the recorded tremors, in order to substantiate results related to the effects of load on ET, to distinguish between multiple sources of ET, and to separate the influence of peripheral factors on ET. Our results show that, in ET, the dynamical characteristics, that is, values of respective scaling exponents, of the main frequency component of recorded tremors change after the addition of load. Our results also show that in all the observed cases the scaling behavior of the calculated functions changes as well the calculated WT scalegrams and DFA functions display a shift in the position of the crossover when the load is added. We conclude that the difference in behavior of the WT and DFA functions between different conditions in ET could be associated with the expected pathology in ET, or with some additional mechanism that controls movements in ET patients, and causes the observed changes in scaling behavior.", publisher = "Elsevier, Amsterdam", journal = "Physica A-Statistical Mechanics & its Applications", title = "Scaling analysis of the effects of load on hand tremor movements in essential tremor", pages = "1746-1741", number = "10", volume = "390", doi = "10.1016/j.physa.2010.12.037" }
Blesić, S., Stratimirović, Đ., Milošević, S., Marić, J., Kostić, V. S.,& Ljubisavljević, M.. (2011). Scaling analysis of the effects of load on hand tremor movements in essential tremor. in Physica A-Statistical Mechanics & its Applications Elsevier, Amsterdam., 390(10), 1741-1746. https://doi.org/10.1016/j.physa.2010.12.037
Blesić S, Stratimirović Đ, Milošević S, Marić J, Kostić VS, Ljubisavljević M. Scaling analysis of the effects of load on hand tremor movements in essential tremor. in Physica A-Statistical Mechanics & its Applications. 2011;390(10):1741-1746. doi:10.1016/j.physa.2010.12.037 .
Blesić, Suzana, Stratimirović, Đorđe, Milošević, S., Marić, J., Kostić, Vladimir S., Ljubisavljević, Miloš, "Scaling analysis of the effects of load on hand tremor movements in essential tremor" in Physica A-Statistical Mechanics & its Applications, 390, no. 10 (2011):1741-1746, https://doi.org/10.1016/j.physa.2010.12.037 . .