title: Prefrontal EEG alpha asymmetry changes while observing disaster happening to other people: cardiac correlates and prediction of emotional impact.
abstract: Changes of EEG alpha asymmetry in terms of increased right versus left sided activity in prefrontal cortex are considered to index activation of the withdrawal/avoidance motivational system. The present study aimed to add evidence of the validity of individual differences in the EEG alpha asymmetry response and their relevance regarding the impact of emotional events. The magnitude of the EEG alpha asymmetry response while watching a film consisting of scenes of real injury and death correlated with components of transient cardiac responses to sudden horrifying events happening to persons in the film which index withdrawal/avoidance motivation and heightened attention and perceptual intake. Additionally, it predicted greater mood deterioration following the film and film-related intrusive memories and avoidance over the following week. The study provides further evidence for prefrontal EEG alpha asymmetry changes in response to relevant stimuli reflecting an individual's sensitivity to negative social-emotional cues encountered in everyday life.
authors.affiliation: Department of Psychology, Biological Psychology Unit, University of Graz, Austria. Electronic address: ilona.papousek@uni-graz.at.
authors.forename: Ilona
authors.initials: I
authors.lastname: Papousek
authors.affiliation: Department of Psychology, Biological Psychology Unit, University of Graz, Austria.
authors.forename: Elisabeth M
authors.initials: EM
authors.lastname: Weiss
authors.affiliation: Department of Psychology, Biological Psychology Unit, University of Graz, Austria.
authors.forename: Günter
authors.initials: G
authors.lastname: Schulter
authors.affiliation: Department of Psychology, Biological Psychology Unit, University of Graz, Austria.
authors.forename: Andreas
authors.initials: A
authors.lastname: Fink
authors.affiliation: Department of Psychology, Biological Psychology Unit, University of Graz, Austria.
authors.forename: Eva M
authors.initials: EM
authors.lastname: Reiser
authors.affiliation: Institute of Physiology, Medical University, Graz, Austria.
authors.forename: Helmut K
authors.initials: HK
authors.lastname: Lackner
mesh_terms: D000293:Adolescent; D000328:Adult; D000339:Affect; D001288:Attention / Q000502:physiology; D003463:Cues; D004190:Disasters; D004569:Electroencephalography; D004644:Emotions / Q000502:physiology*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D007206:Individuality; D009042:Motivation; D017397:Prefrontal Cortex / Q000502:physiology*; D013315:Stress, Psychological / Q000503:physiopathology*; D055815:Young Adult
keywords: Avoidance motivation; EEG; Heart rate response; Hemispheric asymmetry; Intrusions; Withdrawal motivation