Abstract:
Sensory/cognitive stimulation elicits multiple electroencephalogram (EEG)-oscillations that may be partly or fully overlapping over the time axis. To evaluate co-existent multi-frequency oscillations, EEG responses to unimodal (auditory or visual) and bimodal (combined auditory and visual) stimuli were analyzed by applying a new method called wavelet entropy (WE). The method is based on the wavelet transform (WT) and quantifies entropy of short segments of the event-related brain potentials (ERPs). For each modality, a significant transient decrease of WE emerged in the post-stimulus EEG epoch indicating a highly-ordered state in the ERP. WE minimum was always determined by a prominent dominance of theta (4-8 Hz) ERP components over other frequency bands. Event-related 'transition to order' was most pronounced and stable at anterior electrodes, and after bimodal stimulation. Being consistently observed across different modalities, a transient theta-dominated state may reflect a processing stage that is obligatory for stimulus evaluation, during which interfering activations from other frequency networks are minimized. © 2002 Published by Elsevier Science B.V.
Registro:
Documento: |
Artículo
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Título: | Wavelet entropy analysis of event-related potentials indicates modality-independent theta dominance |
Autor: | Yordanova, J.; Kolev, V.; Rosso, O.A.; Schürmann, M.; Sakowitz, O.W.; Özgören, M.; Basar, E. |
Filiación: | Institute of Physiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 23, 1113 Sofia, Bulgaria Instituto De Calculo, Facultad De Ciencias Exactas Y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina Institute of Physiology, Medical University Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany Department of Neurosurgery, Charite-Humboldt University Berlin, D-13353 Berlin, Germany Department of Biophysics, Medical School, Dokuz Eylül University, Balçova, Izmir, Turkey Brain Dynamics Multidisciplinary Research Network, Ankara, Turkey
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Palabras clave: | Bimodal stimulation; EEG; Entropy; Event-related potentials (ERPs); Time-frequency analysis; adult; article; auditory stimulation; cognition; controlled study; electrode; electroencephalogram; entropy; event related potential; evoked auditory response; evoked visual response; female; frequency analysis; human; human experiment; male; normal human; priority journal; sensory stimulation; theta rhythm; visual stimulation; Acoustic Stimulation; Adult; Alpha Rhythm; Auditory Perception; Beta Rhythm; Biological Clocks; Cerebral Cortex; Delta Rhythm; Entropy; Evoked Potentials; Humans; Male; Nerve Net; Neurons; Photic Stimulation; Regression Analysis; Signal Processing, Computer-Assisted; Theta Rhythm; Time Factors; Visual Perception |
Año: | 2002
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Volumen: | 117
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Número: | 1
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Página de inicio: | 99
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Página de fin: | 109
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DOI: |
http://dx.doi.org/10.1016/S0165-0270(02)00095-X |
Título revista: | Journal of Neuroscience Methods
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Título revista abreviado: | J. Neurosci. Methods
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ISSN: | 01650270
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CODEN: | JNMED
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650270_v117_n1_p99_Yordanova |
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Citas:
---------- APA ----------
Yordanova, J., Kolev, V., Rosso, O.A., Schürmann, M., Sakowitz, O.W., Özgören, M. & Basar, E.
(2002)
. Wavelet entropy analysis of event-related potentials indicates modality-independent theta dominance. Journal of Neuroscience Methods, 117(1), 99-109.
http://dx.doi.org/10.1016/S0165-0270(02)00095-X---------- CHICAGO ----------
Yordanova, J., Kolev, V., Rosso, O.A., Schürmann, M., Sakowitz, O.W., Özgören, M., et al.
"Wavelet entropy analysis of event-related potentials indicates modality-independent theta dominance"
. Journal of Neuroscience Methods 117, no. 1
(2002) : 99-109.
http://dx.doi.org/10.1016/S0165-0270(02)00095-X---------- MLA ----------
Yordanova, J., Kolev, V., Rosso, O.A., Schürmann, M., Sakowitz, O.W., Özgören, M., et al.
"Wavelet entropy analysis of event-related potentials indicates modality-independent theta dominance"
. Journal of Neuroscience Methods, vol. 117, no. 1, 2002, pp. 99-109.
http://dx.doi.org/10.1016/S0165-0270(02)00095-X---------- VANCOUVER ----------
Yordanova, J., Kolev, V., Rosso, O.A., Schürmann, M., Sakowitz, O.W., Özgören, M., et al. Wavelet entropy analysis of event-related potentials indicates modality-independent theta dominance. J. Neurosci. Methods. 2002;117(1):99-109.
http://dx.doi.org/10.1016/S0165-0270(02)00095-X