Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Never mind the spider: Late positive potentials to phobic threat at fixation are unaffected by perceptual load
Stockholm University, Faculty of Social Sciences, Department of Psychology.
Stockholm University, Faculty of Social Sciences, Department of Psychology.
Stockholm University, Faculty of Social Sciences, Department of Psychology.
2010 (English)In: Psychophysiology, ISSN 0048-5772, E-ISSN 1469-8986, Vol. 47, no 6, 1151-1158 p.Article in journal (Refereed) Published
Abstract [en]

Research suggests that processing of emotional stimuli may be eliminated if a concurrent task places sufficient demands on attentional resources. To test whether this holds for stimuli with strong emotional significance, pictures of spiders as well as mushrooms were presented at fixation to spider-fearful and non-fearful participants. Concurrently, perceptual load was manipulated in two levels with a peripheral letter discrimination task. Results of event-related potentials showed that, compared with non-fearful participants, spider-fearful participants showed greater late positive potentials (LPP) to spiders than mushrooms, which provides a manipulation check that spiders were emotionally meaningful to spider-fearful participants. Critically, this effect was not affected by level of perceptual load. These findings suggest that strong emotional stimuli at fixation may resist manipulations of perceptual load.

Place, publisher, year, edition, pages
2010. Vol. 47, no 6, 1151-1158 p.
Keyword [en]
Emotion, Attention, EEG, ERP
National Category
Psychology
Identifiers
URN: urn:nbn:se:su:diva-51664DOI: 10.1111/j.1469-8986.2010.01019.xISI: 000282874800019OAI: oai:DiVA.org:su-51664DiVA: diva2:385864
Note
authorCount :3Available from: 2011-01-12 Created: 2011-01-12 Last updated: 2017-12-11Bibliographically approved
In thesis
1. Fearful attention: Investigating event-related potentials in spider phobia
Open this publication in new window or tab >>Fearful attention: Investigating event-related potentials in spider phobia
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Previous studies showed that emotional pictures capture attention. Further, this effect was decreased by manipulating spatial attention. In contrast, studies produced mixed findings for effects of perceptual load on attention to emotional pictures. Emotional pictures can be phobic or nonphobic. Because phobia might be an evolutionary adaption, it is possible that effects of phobic pictures on attention differ from effects of nonphobic emotional pictures. The present thesis aimed at investigating attention in spider phobia. Attention to emotional pictures was operationalized as event-related potentials (ERPs) (P1, early posterior negativity [EPN,] and late positive potential [LPP]). Two research questions were formulated. First, do phobic pictures evoke larger ERPs than what can be expected from arousal and valence? Second, are effects of spatial attention and perceptual load on ERPs the same for phobic and nonphobic emotional pictures? To investigate this, phobic and nonphobic negative pictures were presented to spider phobic and nonphobic participants. To determine effects of spatial attention on ERPs, participants were instructed to divert attention to a single letter that was presented in the periphery. To determine effects of perceptual load on ERPs, participants were instructed to perform a letter discrimination task on one, two, or three letters that were presented in the periphery. Study 1 showed enhanced LPP amplitudes to phobic pictures independent of arousal and valence. Further, this effect was present in both phobic and nonphobic participants. Study 2 showed that there was no effect of perceptual load on LPP to phobic pictures. Study 3 showed that spatial attention reduced LPP amplitudes, and to a similar extent for both phobic and nonphobic pictures. Further, perceptual load did not reduce EPN or LPP amplitudes to either phobic or nonphobic pictures. To conclude, the results suggest that phobic pictures evoke larger ERP amplitudes than nonphobic pictures. Still, ERPs to phobic and nonphobic pictures are moderated similarly by spatial attention and perceptual load.

Place, publisher, year, edition, pages
Stockholm: Department of Psychology, Stockholm University, 2012. 48 p.
Keyword
attention, phobia, event-related potential
National Category
Psychology
Research subject
Psychology
Identifiers
urn:nbn:se:su:diva-83688 (URN)978-91-7447-620-0 (ISBN)
Public defence
2013-01-18, David Magnussonsalen (U31), hus 8, Frescati Hagväg 8, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Manuscript. Paper 3: Manuscript.

Available from: 2012-12-27 Created: 2012-12-13 Last updated: 2012-12-27Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Norberg, JoakimPeira, NathalieWiens, Stefan
By organisation
Department of Psychology
In the same journal
Psychophysiology
Psychology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 32 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf