Stability of non-linear electrical activity recorded in the EEG during baseline conditions with eyes closed
Introduction: The electroencephalogram (EEG) allows to record the electrical activity of the brain at rest and during the performance of cognitive tasks. Aim: to determine whether brain activity, analyzed as non-linear dynamics, remains stable during different temporary windows in a basal condition...
| Main Authors: | , |
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| Format: | Article |
| Language: | Spanish |
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Centro Nacional de Información de Ciencias Médicas. Editorial de Ciencias Médicas (ECIMED)
2020-07-01
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| Series: | Revista Cubana de Investigaciones Biomédicas |
| Subjects: | |
| Online Access: | http://www.revibiomedica.sld.cu/index.php/ibi/article/view/626 |
| Summary: | Introduction: The electroencephalogram (EEG) allows to record the electrical activity of the brain at rest and during the performance of cognitive tasks. Aim: to determine whether brain activity, analyzed as non-linear dynamics, remains stable during different temporary windows in a basal condition with closed eyes. Methods: 14 male university students were registered with EEG for two minutes. Subsequently, Hurst (H) index averages were compared in temporary windows of 60, 30 and 10 seconds. Results: they show that the averages of the indices H are stable through different temporary windows in the prefrontal, temporal and occipital regions. Conclusion: EEG records at baseline with eyes closed are valid for comparing experimental cognitive problem solving protocols using non-linear mathematics such as the Hurst index. |
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| ISSN: | 0864-0300 1561-3011 |