Spectral characteristics and linear–nonlinear synchronization changes of different EEG frequency bands during the CNV
| Autor: | István Ulbert, Márk Molnár, Balázs Czigler, István Kondákor, Zsófia Anna Gaál, Roland Boha, Roland Csuhaj |
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| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Cognitive Neuroscience Contingent Negative Variation Experimental and Cognitive Psychology Electroencephalography Arousal Orienting response Synchronization (alternating current) Developmental Neuroscience medicine Humans Beta Rhythm Cortical Synchronization Theta Rhythm Biological Psychiatry Communication medicine.diagnostic_test Endocrine and Autonomic Systems business.industry Working memory General Neuroscience Alpha Rhythm Neuropsychology and Physiological Psychology Nonlinear Dynamics Neurology Data Interpretation Statistical Linear Models Female Transient (oscillation) Psychology business Neuroscience Psychomotor Performance |
| Zdroj: | Psychophysiology. 45:412-419 |
| ISSN: | 1469-8986 0048-5772 |
| DOI: | 10.1111/j.1469-8986.2008.00648.x |
| Popis: | During the CNV recorded in a simple auditory working memory task, task-specific decrease of the relative delta band and a transient increase of the absolute theta band were seen, accompanied by an increase of the absolute alpha1 and alpha2 bands in the posterior region. The decreased delta power probably corresponds to increased task-evoked arousal, whereas the transient theta power increase corresponds to working memory demand and possibly to the orienting response. The increased alpha1 and alpha2 power may be a manifestation of a top-down mechanism revealing control over the execution of a response. The area-specific, task-related, and frequency-dependent changes of EEG complexity measures indicate frontally increasing complexity during the early part of the CNV in the beta frequency bands, which underscores the importance of this region in the mechanisms of anticipatory behavior. |
| Databáze: | OpenAIRE |
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