Search for dissertations about: "fear"

Showing result 1 - 5 of 413 swedish dissertations containing the word fear.

  1. 1. Erasing Fear Effect of Disrupting Fear Memory Reconsolidation on Central and Peripheral Nervous System Activity

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Thomas Ågren; Uppsala universitet.; [2012]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Memory reconsolidation; fear conditioning; serotonin; dopamine; polymorphism; gene; exposure therapy; fMRI; amygdala;

    Abstract : Fear memories, here defined as learned associations between a stimulus and a physiological fear reaction, are formed through fear conditioning. In animals, fear memories, present in the lateral amygdala, undergo reconsolidation after recall. READ MORE

  2. 2. Fear, Startle, and Fear-Potentiated Startle Probing Emotion in the Human Brain

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Pissiota; Uppsala universitet.; [2003]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychology; anxiety; attention; brain; fear; fear-potentiated startle; human; neuroimaging; positron emission tomography; posttraumatic stress disorder; regional cerebral blood flow; startle; startle habituation; symptom provocation; Psykologi; SOCIAL SCIENCES Social sciences Psychology; SAMHÄLLSVETENSKAP Socialvetenskap Psykologi; Psychology; psykologi;

    Abstract : The present thesis explored the neurobiological basis of three aspects of defense behaviors in humans. Positron emission tomography methodology was used, and changes in regional cerebral blood flow (rCBF) were measured as an index of neural activity. READ MORE

  3. 3. Guided by Fear : Effects on attention and awareness

    University dissertation from Stockholm : Department of Psychology, Stockholm University

    Author : Nathalie Peira; Stockholms universitet.; [2010]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Emotion; fear; attention; awareness; affective processing; heart rate; skin conductance; SOCIAL SCIENCES Social sciences Psychology; SAMHÄLLSVETENSKAP Socialvetenskap Psykologi; Psychology; psykologi;

    Abstract : Because the visual system has limited capacity, emotions such as fear may play an important role in guiding the selection of relevant input (LeDoux, 2000; Öhman & Mineka, 2001). The aim of the current thesis was to investigate how fear can guide the organism by influencing:  (I) attentional processes, (II) awareness of the visual input, and (III) affective processing independent of awareness. READ MORE

  4. 4. Children with cancer : focusing on their fear and on how their fear is handled

    University dissertation from Örebro : Örebro universitetsbibliotek

    Author : Agneta Anderzén-Carlsson; Örebro universitet.; [2007]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Children; cancer; fear; handling; VETERINARY MEDICINE Medicine; VETERINÄRMEDICIN Medicin; Medicin; Medicine;

    Abstract : Various fears in children with cancer have previously been identified as a result of studying e.g. symptom experiences, distress and uncertainty within this population. Studies of the meaning the children give to their fear, as well as the handling of their fear seem to be sparse, however. READ MORE

  5. 5. The Amygdala, Fear and Reconsolidation Neural and Behavioral Effects of Retrieval-Extinction in Fear Conditioning and Spider Phobia

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Johannes Björkstrand; Uppsala universitet.; [2017]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Fear conditioning; phobia; memory reconsolidation; retrieval-extinction; exposure therapy; amygdala; fMRI; Psychology; Psykologi;

    Abstract : The amygdala is crucially involved in the acquisition and retention of fear memories. Experimental research on fear conditioning has shown that memory retrieval shortly followed by pharmacological manipulations or extinction, thereby interfering with memory reconsolidation, decreases later fear expression. READ MORE