Search for dissertations about: "Thomas Ågren"

Found 3 swedish dissertations containing the words Thomas Ågren.

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

    Author : Thomas Ågren; Mats Fredrikson; Tomas Furmark; Uppsala universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; 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. Modelling phase separation in Fe-Cr alloys : A continuum approach

    Author : Thomas Barkar; John Ågren; Nele Moelans; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Phase separation; spinodal decomposition; nucleation; diffusion; thermodynamics; kinetics; steel; ferritic;

    Abstract : The formation of Cr-rich and Fe-rich domains upon ageing of an initially homogeneous Fe-Cr alloy at elevated temperatures (300-600 ºC) is commonly referred to as phase separation. The behaviour originates from a miscibility gap in the Fe-Cr phase diagram. READ MORE

  3. 3. Emotional mental imagery and the reduction of fear within the mind’s eye

    Author : Johanna M. Hoppe; Thomas Ågren; Emily A. Holmes; Francisco Estevez; Uppsala universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mental imagery; emotion; imaginal exposure; imaginal extinction; hotspots; intrusive memories; Psychology; Psykologi;

    Abstract : Mental imagery refers to sensory-perceptual experiences in the absence of external sensory input. Emotional mental imagery (i.e., imagery with emotional content) is a key feature in many mental disorders, such as the image-based intrusive memories of trauma in posttraumatic stress disorder (PTSD). READ MORE