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Right-sided human prefrontal brain activation during acquisition of conditioned fear.
Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Psychology.
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2002 (English)In: Emotion, ISSN 1528-3542, Vol. 2, no 3, 233-41 p.Article in journal (Refereed) Published
Abstract [en]

This H2(15)O positron emission tomography (PET) study reports on relative regional cerebral blood flow (rCBF) alterations during fear conditioning in humans. In the PET scanner, subjects viewed a TV screen with either visual white noise or snake videotapes displayed alone, then with electric shocks, followed by final presentations of white noise and snakes. Autonomic nervous system responses confirmed fear conditioning only to snakes. To reveal neural activation during acquisition, while equating sensory stimulation, scans during snakes with shocks and white noise alone were contrasted against white noise with shocks and snakes alone. During acquisition, rCBF increased in the right medial frontal gyrus, supporting a role for the prefrontal cortex in fear conditioning to unmasked evolutionary fear-relevant stimuli.

Place, publisher, year, edition, pages
2002. Vol. 2, no 3, 233-41 p.
Keyword [en]
Adult, Animals, Arousal/physiology, Brain Mapping, Conditioning; Classical/*physiology, Dominance; Cerebral/*physiology, Evolution, Fear/*physiology, Female, Humans, Prefrontal Cortex/*physiology/radionuclide imaging, Regional Blood Flow/physiology, Research Support; Non-U.S. Gov't, Snakes, Tomography; Emission-Computed
Identifiers
URN: urn:nbn:se:uu:diva-19626PubMedID: 12899356OAI: oai:DiVA.org:uu-19626DiVA: diva2:47398
Available from: 2006-11-30 Created: 2006-11-30 Last updated: 2011-01-13

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Furmark, TomasFredrikson, Mats

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