Mu and alpha oscillations (8 - 12 Hz) are the most prominent electroencephalographs rhythms observed in awake, relaxed subjects. Different cortical sources may participate in these oscillations and appear to be modulated by the sensorimotor context and functional demands. In microgravity, the marked reduction in multimodal graviceptive inputs to cortical networks participating in the representation of space could be expected to affect these spontaneous rhythms. The authors report the results of an experiment conducted over the course of 3 spaceflights, in which they quantified the power of the mu and alpha rhythms in relation to the arrest reaction (i.e. in 2 distinct physiological states: eyes open and eyes closed). They observed that the power of the spontaneous mu and alpha rhythms recorded in the eyes-closed state in the sensorimotor areas (mu rhythm) and in the parieto-occipital cortex (alpha rhythm) increased in microgravity. The suppression coefficient produced by eye-opening/closure state transition also increased in microgravity. These results are discussed in terms of current theories on the source and the physiological significance of these EEG rhythms.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Mu and alpha EEG rhythms during the arrest reaction in microgravity


    Weitere Titelangaben:

    Mu und alpha EEG-Rhythmen während der Arrestreaktion im Zustand der Mikrogravität


    Beteiligte:
    De Saedeleer, C. (Autor:in) / Leroy, A. (Autor:in) / Bengoetxea, A. (Autor:in) / Cebolla, A. (Autor:in) / Leurs, F. (Autor:in) / Dan, B. (Autor:in) / Berthoz, A. (Autor:in) / McIntyre, J. (Autor:in) / Cheron, G. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2007


    Format / Umfang :

    6 Seiten, 2 Bilder, 2 Tabellen, 31 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Effects of microgravity on circadian rhythms in insects

    Alpatov, A. M. / Hoban-Higgins, T. M. / Fuller, C. A. et al. | NTRS | 1998


    International Space Station Alpha Microgravity Environment

    British Library Conference Proceedings | 1995


    Ground reaction forces during treadmill running in microgravity

    De Witt, John K. / Ploutz-Snyder, Lori L. | Tema Archiv | 2014


    The Scorpion-An Ideal Animal Model to Study Long-Term Microgravity Effects on Circadian Rhythms

    Riewe, P. C. / Horn, E. R. / University of New Mexico | British Library Conference Proceedings | 2000


    Biological Rhythms Modelisation of Vigilance and Sleep in Microgravity State with COSINOR and Volterra's Kernels Methods

    de Gerlicz, C.G. / Golding, J.G. / Bobola, P. et al. | British Library Conference Proceedings | 2008