title: Chaos-chaos transition of left hemisphere EEGs during standard tasks of Waterloo-Stanford Group Scale of hypnotic susceptibility.
abstract: A recent study, recurrence quantification analysis of EEG signals during standard tasks of Waterloo-Stanford Group Scale of hypnotic susceptibility investigated recurrence quantifiers (RQs) of hypnotic electroencephalograph (EEG) signals recorded after hypnotic induction while subjects were doing standard tasks of Waterloo-Stanford Group Scale (WSGS) of hypnotic susceptibility to distinguish subjects of different hypnotizability levels. Following the same analysis, the current study determines the capability of different RQs to distinguish subjects of low, medium and high hypnotizability level and studies the influence of hypnotizability level on underlying dynamic of tasks. Besides, EEG channels were sorted according to the number of their RQs, which differed significantly among subjects of different hypnotizability levels. Another valuable result was determination of major brain regions in observing significant differences in various task types (ideomotors, hallucination, challenge and memory).
authors.affiliation: School of Biomedical Engineering, Islamic Azad University, Science and Research Branch , Tehran , Iran and.
authors.forename: Elahe'
authors.initials: E
authors.lastname: Yargholi
authors.forename: Ali Motie
authors.initials: AM
authors.lastname: Nasrabadi
mesh_terms: D000465:Algorithms; D001931:Brain Mapping / Q000379:methods; D003071:Cognition / Q000502:physiology*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D006801:Humans; D006990:Hypnosis / Q000379:methods*; D007092:Imagination / Q000502:physiology; D008297:Male; D017711:Nonlinear Dynamics; D011594:Psychometrics / Q000379:methods*; D011597:Psychomotor Performance / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055815:Young Adult
keywords: Electroencephalograph; Waterloo-Stanford Group Scale of hypnotic susceptibility; hypnosis; hypnotic susceptibility; hypnotizability; recurrence quantification analysis