Defensive engagement and perceptual enhancement

Keil, Andreas; Bradley, Margaret M.; Ihssen, Niklas; Heim, Sabine; Vila, Jaime; Guerra, Pedro; Lang, Peter J.

Defensive engagement and perceptual enhancement

Dateien

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Datum

2010

Autor:innen

Keil, Andreas

Bradley, Margaret M.

Ihssen, Niklas

Heim, Sabine

Vila, Jaime

Guerra, Pedro

Lang, Peter J.

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Neuropsychologia. 2010, 48(12), pp. 3580-3584. ISSN 0028-3932. eISSN 1873-3514. Available under: doi: 10.1016/j.neuropsychologia.2010.08.007

Zusammenfassung

We tested whether visual cortical sensitivity to external cues in the context of an acute defensive reaction is heightened or attenuated. A strong cardiac defense (fear) response was elicited by presenting an abrupt, loud acoustic stimulus following a 10-min period of quiescence. Electrocortical responses to aversive and neutral pictures following defensive stimulus onset were measured using dense-array EEG. Pictures were flickered at 12.5 Hz to evoke steady-state visual evoked potentials (ssVEP), which can be reliably extracted on the basis of single trials. Visual cortical activity indexing perceptual processing was substantially heightened when pictures were shown in temporal proximity to (i.e., 5 s after) the defense stimulus. Replicating previous studies, aversive visual stimuli were associated with enhanced ssVEP amplitude, compared to neutral stimuli. Acute defense facilitates visual perception of external cues and preserves accurate discrimination between threatening and safe cues.

Fachgebiet (DDC)

150 Psychologie

Schlagwörter

Human, Dense-array EEG, Cardiac defense, Emotion, Steady-state potential

Zitieren

ISO 690

KEIL, Andreas, Margaret M. BRADLEY, Niklas IHSSEN, Sabine HEIM, Jaime VILA, Pedro GUERRA, Peter J. LANG, 2010. Defensive engagement and perceptual enhancement. In: Neuropsychologia. 2010, 48(12), pp. 3580-3584. ISSN 0028-3932. eISSN 1873-3514. Available under: doi: 10.1016/j.neuropsychologia.2010.08.007

BibTex

@article{Keil2010-10Defen-12803,
  year={2010},
  doi={10.1016/j.neuropsychologia.2010.08.007},
  title={Defensive engagement and perceptual enhancement},
  number={12},
  volume={48},
  issn={0028-3932},
  journal={Neuropsychologia},
  pages={3580--3584},
  author={Keil, Andreas and Bradley, Margaret M. and Ihssen, Niklas and Heim, Sabine and Vila, Jaime and Guerra, Pedro and Lang, Peter J.}
}

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