Analysis of signal fluctuations of Cortical Spreading Depression: Preliminary findings

In this work, we apply Detrended Fluctuation Analysis (DFA) to study the dynamics of electrical cortical activity in rats during the phenomenon of Cortical Spreading Depression (CSD), as well as the periods before and after this phenomenon. The characteristic of CSD is reduced electrical activity th...

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Bibliographic Details
Published in:Physica A 2010-05, Vol.389 (9), p.1869-1873
Main Authors: do Nascimento, Rosângela S., de Araújo, Luiz Henrique G.D., Moraes, Renato B., Barbosa, Catão T.F., Guedes, Rubem C.A., Nogueira, Romildo A., Stošić, Tatijana
Format: Article
Language:English
Subjects:
Bursting
Cortical Spreading Depression
Depression
Detrended Fluctuation Analysis
Dynamic tests
Electrocorticogram
Fluctuation
Rats
Spreading
Spreads
Temporal logic
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Summary:In this work, we apply Detrended Fluctuation Analysis (DFA) to study the dynamics of electrical cortical activity in rats during the phenomenon of Cortical Spreading Depression (CSD), as well as the periods before and after this phenomenon. The characteristic of CSD is reduced electrical activity that occurs and spreads in the cerebral cortex after the application of electrical, chemical or mechanical stimulus. Our results show that the electrocorticogram signal shows long range temporal correlations and scaling behavior, except during the pre-CSD burst phase (significant increase of amplitude provoked by stimulus).
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2010.01.010