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Analysis of signal fluctuations of Cortical Spreading Depression: Preliminary findings |
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| Authors: | Rosâ ngela S. do Nascimento |
| Affiliation: | a Departamento de Estatística e Informática, Brazil b Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, 52171-900 Recife-PE, Brazil c Departamento de Educação Física, Brazil d Departamento de Nutrição, Centro de Ciências da Saúde, UFPE. AV. Prof. Moraes Rego, s/n, Cid. Universitária, 50670-901, Recife-PE, Brazil |
| Abstract: | 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). |
| Keywords: | Cortical Spreading Depression Electrocorticogram Detrended Fluctuation Analysis |
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