Sökning: "Fear psychology"

Visar resultat 1 - 5 av 71 avhandlingar innehållade orden Fear psychology.

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

    Författare :Anna Pissiota; Mats Fredrikson; Scott Rauch; Uppsala universitet; []
    Nyckelord :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; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : 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. LÄS MER

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

    Författare :Nathalie Peira; Stefan Wiens; Nazanin Derakhshan; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Emotion; fear; attention; awareness; affective processing; heart rate; skin conductance; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : 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. LÄS MER

  4. 3. Erasing Fear : Effect of Disrupting Fear Memory Reconsolidation on Central and Peripheral Nervous System Activity

    Författare :Thomas Ågren; Mats Fredrikson; Tomas Furmark; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Memory reconsolidation; fear conditioning; serotonin; dopamine; polymorphism; gene; exposure therapy; fMRI; amygdala;

    Sammanfattning : 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. LÄS MER

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

    Författare :Johannes Björkstrand; Mats Fredrikson; Emily Holmes; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Fear conditioning; phobia; memory reconsolidation; retrieval-extinction; exposure therapy; amygdala; fMRI; Psychology; Psykologi;

    Sammanfattning : 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. LÄS MER

  7. 5. Rädsla för förlust av liv och heder

    Författare :Mina Sedem; Henry Montgomery; Gunilla Preisler; Lars Dencik; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; conflicts; honor; violence; fear; konflikter; heder; våld; rädsla; Psychology; psykologi;

    Sammanfattning : The aim of this thesis was to examine honor conflicts that arose between girls with Swedish-foreign origin and their parents, but also to explore an honor conflict that resulted in an extreme form of violent crime, namely the murder of a young girl. The participants were different family members with foreign origins. LÄS MER