title: Spectral characteristics and linear-nonlinear synchronization changes of different EEG frequency bands during the CNV.
abstract: 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.
authors.affiliation: Institute of Psychology, Hungarian Academy of Sciences, Budapest, Hungary. molnar@cogpsyphy.hu
authors.forename: Márk
authors.initials: M
authors.lastname: Molnár
authors.forename: Roland
authors.initials: R
authors.lastname: Csuhaj
authors.forename: Zsófia Anna
authors.initials: ZA
authors.lastname: Gaál
authors.forename: Balázs
authors.initials: B
authors.lastname: Czigler
authors.forename: István
authors.initials: I
authors.lastname: Ulbert
authors.forename: Roland
authors.initials: R
authors.lastname: Boha
authors.forename: István
authors.initials: I
authors.lastname: Kondákor
mesh_terms: D000328:Adult; D000513:Alpha Rhythm; D001611:Beta Rhythm; D003265:Contingent Negative Variation / Q000502:physiology*; D003344:Cortical Synchronization; D003627:Data Interpretation, Statistical; D004569:Electroencephalography; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D017711:Nonlinear Dynamics; D011597:Psychomotor Performance / Q000502:physiology; D013826:Theta Rhythm