Early cortical facilitation for emotionally arousing targets during the attentional blink

Keil, Andreas; Ihssen, Niklas; Heim, Sabine

Early cortical facilitation for emotionally arousing targets during the attentional blink

Dateien

Keil_281433.pdfGröße: 1.75 MBDownloads: 545

Datum

2006

Autor:innen

Keil, Andreas

Ihssen, Niklas

Heim, Sabine

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Psychologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

BMC Biology. 2006, 4(1), 23. ISSN 1741-7007. eISSN 1741-7007. Available under: doi: 10.1186/1741-7007-4-23

Zusammenfassung

Background

The present study aimed to investigate the time course of electrocortical facilitation for affectively arousing written words during the so-called 'attentional blink' (AB) period in a rapid serial visual presentation (RSVP) task. The AB refers to a period of reduced awareness for second-target stimuli following a first target by an interval of about 200–500 ms. Pleasant, neutral, and unpleasant written verbs were used as second targets in an 8.6-Hz RSVP paradigm that contained affectively neutral words as distractors. Replicating and extending behavioral studies, we expected that emotional second targets would be associated with better identification accuracy and greater electrocortical activity, compared with neutral targets.

Results

The steady-state visual evoked potential was recorded using 129 scalp electrodes. The time-varying energy at the presentation frequency of 8.6 Hz was extracted as a continuous measure of electrocortical activity related to the RSVP stream. Behavioral data showed that at an inter-target interval of 232 ms, the report for emotionally arousing (pleasant and unpleasant) words was more accurate than for neutral control words. This result was mirrored by the electrocortical response at posterior sensors, which showed rapid amplitude enhancement (120–270 ms after T2 onset) for pleasant and unpleasant targets specifically.

Conclusion

The present data suggest that identification facilitation for emotionally arousing target words in the AB is related to rapid enhancement of sensory processing. Affectively arousing information is preferentially selected at the level of early perceptual analysis, leading to facilitation at later stages of processing, including consolidation in working memory and visual awareness.

Fachgebiet (DDC)

150 Psychologie

Zitieren

ISO 690

KEIL, Andreas, Niklas IHSSEN, Sabine HEIM, 2006. Early cortical facilitation for emotionally arousing targets during the attentional blink. In: BMC Biology. 2006, 4(1), 23. ISSN 1741-7007. eISSN 1741-7007. Available under: doi: 10.1186/1741-7007-4-23

BibTex

@article{Keil2006Early-28143,
  year={2006},
  doi={10.1186/1741-7007-4-23},
  title={Early cortical facilitation for emotionally arousing targets during the attentional blink},
  number={1},
  volume={4},
  issn={1741-7007},
  journal={BMC Biology},
  author={Keil, Andreas and Ihssen, Niklas and Heim, Sabine},
  note={Article Number: 23}
}

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    <dcterms:abstract xml:lang="eng">Background&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The present study aimed to investigate the time course of electrocortical facilitation for affectively arousing written words during the so-called 'attentional blink' (AB) period in a rapid serial visual presentation (RSVP) task. The AB refers to a period of reduced awareness for second-target stimuli following a first target by an interval of about 200–500 ms. Pleasant, neutral, and unpleasant written verbs were used as second targets in an 8.6-Hz RSVP paradigm that contained affectively neutral words as distractors. Replicating and extending behavioral studies, we expected that emotional second targets would be associated with better identification accuracy and greater electrocortical activity, compared with neutral targets.&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;Results&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The steady-state visual evoked potential was recorded using 129 scalp electrodes. The time-varying energy at the presentation frequency of 8.6 Hz was extracted as a continuous measure of electrocortical activity related to the RSVP stream. Behavioral data showed that at an inter-target interval of 232 ms, the report for emotionally arousing (pleasant and unpleasant) words was more accurate than for neutral control words. This result was mirrored by the electrocortical response at posterior sensors, which showed rapid amplitude enhancement (120–270 ms after T2 onset) for pleasant and unpleasant targets specifically.&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;Conclusion&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;The present data suggest that identification facilitation for emotionally arousing target words in the AB is related to rapid enhancement of sensory processing. Affectively arousing information is preferentially selected at the level of early perceptual analysis, leading to facilitation at later stages of processing, including consolidation in working memory and visual awareness.</dcterms:abstract>
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