uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
Cerebral blood flow in subjects with social phobia during stressful speaking tasks: a PET study.
Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Psychology.
Show others and affiliations
2001 (English)In: Am J Psychiatry, ISSN 0002-953X, Vol. 158, no 8, 1220-6 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: The central nervous system representation of social phobia (social anxiety disorder) is largely unknown. The aim of this study was to examine brain activity during symptom provocation in social phobics. METHOD: Positron emission tomography with the use of (15)O water was used to measure regional cerebral blood flow (rCBF) in 18 subjects with DSM-IV-defined social phobia and a nonphobic comparison group while they were speaking in front of an audience and in private. Heart rate and subjective anxiety were also recorded. RESULTS: During public versus private speaking, subjective anxiety increased more in the social phobics than in the comparison group. Increased anxiety was accompanied by enhanced rCBF in the amygdaloid complex in the social phobics relative to the comparison subjects. Cortically, brain blood flow decreased in the social phobics and increased in the comparison subjects more during public than private speaking in the orbitofrontal and insular cortices as well as in the temporal pole and increased less in the social phobics than in the comparison group in the parietal and secondary visual cortices. Furthermore, rCBF increased in the comparison group, but not in the social phobics, in the perirhinal and retrosplenial cortices. CONCLUSIONS: An rCBF pattern of relatively increased cortical rather than subcortical perfusion was observed in the nonphobic subjects, indicating that cortical evaluative processes were taxed by public performance. In contrast, the social phobia symptom profile was associated with increased subcortical activity. Thus, the functional neuroanatomy of social phobia involves the activation of a phylogenetically older danger-recognition system.

Place, publisher, year, edition, pages
2001. Vol. 158, no 8, 1220-6 p.
Keyword [en]
Adult, Amygdala/blood supply/radionuclide imaging, Anxiety/diagnosis/physiopathology, Brain/*blood supply/radionuclide imaging, Cerebral Cortex/blood supply/radionuclide imaging, Comparative Study, Female, Humans, Laterality/physiology, Male, Middle Aged, Phobic Disorders/*diagnosis/physiopathology, Regional Blood Flow/physiology, Research Support; Non-U.S. Gov't, Speech/*physiology, Stress; Psychological/*diagnosis/physiopathology, Tomography; Emission-Computed/statistics & numerical data, Verbal Behavior/physiology
Identifiers
URN: urn:nbn:se:uu:diva-19524PubMedID: 11481154OAI: oai:DiVA.org:uu-19524DiVA: diva2:47296
Available from: 2006-11-29 Created: 2006-11-29 Last updated: 2011-01-13

Open Access in DiVA

No full text

Other links

PubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=11481154&dopt=Citation
By organisation
Department of Psychology

Search outside of DiVA

GoogleGoogle Scholar

pubmed
urn-nbn

Altmetric score

pubmed
urn-nbn
Total: 344 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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