Search for dissertations about: "task difficulty"

Showing result 11 - 15 of 71 swedish dissertations containing the words task difficulty.

  2. 11. Perspectives of anxiety in stressful environments : Prospective studies in real-life settings

    Author : Magnus Lindén; Institutionen för psykologi; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Applied and experimental psychology; individual differences; executive control; prospective; anxiety; stress; Tillämpad och experimentell psykologi; stress;

    Abstract : The present thesis deals with perspectives of anxiety experienced in stressful environments. As such two major issues are addressed. The first issue is whether increased trait anxiety during work in a high-stress environment is related to impaired performance on executive control tasks. READ MORE

  4. 12. The conscious brain : Empirical investigations of the neural correlates of perceptual awareness

    Author : Johan Eriksson; Lars Nyberg; Geraint Rees; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; consciousness; visual perception; object identification; functional neuroimaging; top-down processing; prefrontal cortex; auditory perception; Neuroscience; Neurovetenskap;

    Abstract : Although consciousness has been studied since ancient time, how the brain implements consciousness is still considered a great mystery by most. This thesis investigates the neural correlates of consciousness by measuring brain activity with functional magnetic resonance imaging (fMRI) while specific contents of consciousness are defined and maintained in various experimental settings. READ MORE

  5. 13. The power of action and knowledge in episodic memory for school-aged children

    Author : Farzaneh Badinlou; Reza Kormi-Nouri; Monika Knopf; Agneta Herlitz; Örebro universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Episodic memory; action memory; enactment effect; subject-performed tasks; experimenter-performed tasks; verbal tasks; school-aged children; memory strategies; information processing;

    Abstract : Developmental and cognitive research suggests that there are age-related differ-ences in children’s episodic memory across school ages due to the development of knowledge, which in turn affects memory strategy use and information pro-cessing over time. However, there are controversial findings related to devel-opmental patterns and factors involved in children’s episodic memory function. READ MORE

  6. 14. Human factors in image guided surgical simulator training : components, visual-spatial and haptic aspects

    Author : Pär Ström; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Image guided surgery; virtual reality; simulation; simulator training; skill acquisition; performance; components; visual-spatial ability; haptic feedback;

    Abstract : New image-guided surgical techniques such as arthroscopy and laparoscopy are difficult to learn and master. To handle these techniques, there seems to be a need for higher-level abilities such as visual-spatial abilities. READ MORE

  7. 15. Optimization Methods for Large Scale Combinatorial Problems and Bijectivity Constrained Image Deformations

    Author : Anders P Eriksson; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis treats two separate but connected themes. This affiliation originates in optimization being the common choice of method for solving most of the occurring challenges. The first theme of the thesis is image segmentation. This is usually defined as the task of distinguishing objects from background in unseen images. READ MORE