RT Journal Article
T1 Mu and alpha EEG rhythms during the arrest reaction in microgravity
A1 Leroy, A.
A1 De Saedeleer, C.
A1 Bengoetxea, A.
A1 Cebolla, A.
A1 Leurs, F.
A1 Dan, B.
A1 Berthoz, A.
A1 McIntyre, J.
A1 Cheron, G.
AB Mu and alpha oscillations (8-12 Hz) are the most prominent electroencephalographic 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. Here, we report the results of an experiment conducted over the course of 3 space flights, in which we 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). We observed that the power of the spontaneous mu and alpha rhythms recorded in the eyesclosed 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.
SN 0938-0108
YR 2007
FD 2007-09
LK https://hdl.handle.net/11556/3727
UL https://hdl.handle.net/11556/3727
LA eng
NO Leroy , A , De Saedeleer , C , Bengoetxea , A , Cebolla , A , Leurs , F , Dan , B , Berthoz , A , McIntyre , J & Cheron , G 2007 , ' Mu and alpha EEG rhythms during the arrest reaction in microgravity ' , Microgravity Science and Technology , vol. 19 , no. 5-6 , pp. 102-107 . https://doi.org/10.1007/BF02919462
NO This work was funded by the Belgian Federal Science Policy Office, the European Space Agency (AO-2004,118), the B lg Na i n Fu f r Sci n i Resea ch (F.N.R.S.), te French Space Agency (C.N.E.S.) and the Research Fund of the University of Brussels (U.L.B.). We ws to t D.pt, P.Deret, M.De, E.Horts, d E.Lory or expert technical assistance, and S.Labouverie for secretarial assistance.
DS TECNALIA Publications
RD 26 jul 2024