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The effects of medial temporal lobe resections on verbal threat and fear conditioning
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
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2010 (English)In: Biological Psychology, ISSN 0301-0511, E-ISSN 1873-6246, Vol. 83, no 1, 41-46 p.Article in journal (Refereed) Published
Abstract [en]

A left hemisphere advantage in the processing of verbal threat has previously been reported, whereas both hemispheres seem equally important in fear conditioning. Here, we compared the effects of unilateral medial temporal lobe (MTL) resections on verbal threat as well as delay and trace fear conditioning. During verbal threat, right and left MTL-resections attenuated fear potentiated startle in comparison with controls. In contrast to previous studies, MTL-resections did not attenuate delay conditioning of skin conductance responses. Left and right resectioned patients did not differ in psychophysiological responses to verbal threat or delay fear conditioning. Trace conditioning was not observed in any group. Results suggest a bilateral MTL hemispheric involvement in the processing of verbal threat, whereas one intact hemisphere seems sufficient for delay conditioning.

Place, publisher, year, edition, pages
2010. Vol. 83, no 1, 41-46 p.
Keyword [en]
Amygdala; Anxiety; Startle; Electrodermal activity; Temporal lobectomy; Trace conditioning
National Category
Neurosciences Psychology
Identifiers
URN: urn:nbn:se:uu:diva-125908DOI: 10.1016/j.biopsycho.2009.10.002ISI: 000273944000007PubMedID: 19836434OAI: oai:DiVA.org:uu-125908DiVA: diva2:321252
Note
Correction in: Biological Psychology, 2010, vol. 83, issue 3, p. 272, doi: 10.1016/j.biopsycho.2009.12.004 Available from: 2010-05-31 Created: 2010-05-31 Last updated: 2017-12-12Bibliographically approved

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Frans, ÖrjanFredrikson, Mats

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