Sökning: "Fear"

Visar resultat 1 - 5 av 614 avhandlingar innehållade ordet Fear.

1. 1. 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

3. 2. 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

4. 3. 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

5. 4. Diagnostic Aspects of Fear of Childbirth

   Författare :Margareta Zar; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Fear of childbirth; W-DEQ; psychometrics; diagnostic test; anxiety; anxiety disorders; state fear; trait fear; delivery; mode of delivery; obsteric complications; riskfactor;

   Sammanfattning : The first study presents the theoretical background of the Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ) and an examination of this new instrument's construct validity and reliability. The W-DEQ has good reliability and measures the construct "fear of childbirth", when compared with other questionnaires. LÄS MER

7. 5. Förlossningsrädsla : med fokus på kvinnors upplevelser av att föda barn

   Författare :Christina Nilsson; Ingela Lundgren; Eva Robertsson; Terese Bondas; Anna-Karin Dykes; Linnéuniversitetet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Fear of childbirth; Negative birth experience; Phenomenology; Childbirth; Birth trauma; Suffering; Midwifery; Support; Long-term; Birth narrative; Lived experice; Vårdvetenskap; Caring Science; Integrated Caring Science;

   Sammanfattning : Aim: The overall aim of this study is to describe experiences of, and the association between, fear of childbirth and birth experiences of women with fear ofchildbirth.Methods: In studies I, II, and IV, a reflective lifeworld approach based on phenomenological philosophy was used to describe women’s experiences of fear of childbirth (I), previous birth experiences (II), and fear of childbirth and of birth experience in a long-term perspective (IV). LÄS MER