Effect of cognitive task on delta and beta EEG synchronization

Author

Nazari, Mohammad Ali ; Ahmadlou, Mehran ; Wallois, Fabrice

Author_Institution

Dept. of Psychol., Univ. of Tabriz, Tabriz, Iran

fYear

2010

fDate

3-4 Nov. 2010

Firstpage

1

Lastpage

4

Abstract

Synchronization as a measure of quantification of similarities in dynamic systems is an important concept in many scientific fields such as neuroscience. A new measure of synchronization, fuzzy SL, was used to investigate overall cortical functional connectivity during a cognitive task compared to resting conditions. High-resolution electroencephalogram (EEG) was recorded during eyes-open resting (EO1), continuous performance test (CPT), and eyes-open resting again (EO2) in 16 healthy children. Global fuzzy SL for delta and beta bands was calculated per condition. The opposite pattern was observed within conditions; delta increased but beta decreased from the EO1 to CPT condition. From the CPT to EO2, changes in the synchronization were also opposite. The findings might be interpreted as condition-specific modulation of functional connectivity of brain neuronal networks.

Keywords

bioelectric phenomena; brain; cognition; electroencephalography; fuzzy neural nets; neurophysiology; beta EEG synchronization; brain neuronal networks; cognitive task effect; cortical functional connectivity; delta EEG synchronization; eye-open resting; global fuzzy SL; high-resolution electroencephalogram; neuroscience; Biological neural networks; Biomedical engineering; Coherence; Electrodes; Electroencephalography; Synchronization; Cognitive task; Connectivity; Electroencephalography; Fuzzy synchronization likelihood;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering (ICBME), 2010 17th Iranian Conference of

Conference_Location

Isfahan

Print_ISBN

978-1-4244-7483-7

Type

conf

DOI

10.1109/ICBME.2010.5704925

Filename

5704925