Sökning: "Hjärnforskning"

Hittade 4 avhandlingar innehållade ordet Hjärnforskning.

  1. 1. Train your brain : updating, transfer, and neural changes

    Författare :Erika Dahlin; Lars Nyberg; Anna Stigsdotter Neely; Torkel Klingberg; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; cognitive training; executive functioning; transfer; fMRI; brain system; young adults; elderly; practice; neural correlates; individual differences; Experimental brain research; Experimentell hjärnforskning; Cognitive science; Kognitionsforskning; fysiologi; Physiology;

    Sammanfattning : An initial aim of this thesis was to determine whether training of a specific executive function (updating) produces improvements in performance on trained and transfer tasks, and whether the effects are maintained over time. Neural systems underlying training and transfer effects were also investigated and one question considered is whether transfer depends on general or specific neural overlap between training and transfer tasks. LÄS MER

  3. 2. Cerebral Perfusion and Metabolism during Experimental Extracorporeal Circulation

    Författare :Ove Jonsson; Stefan Thelin; Fredrik Lennmyr; Sven-Erik Ricksten; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cerebral perfusion; Experimental brain research; Experimentell hjärnforskning; Thoraxkirurgi; Thorax Surgery;

    Sammanfattning : Neurologic injuries are major causes of mortality and morbidity after cardiac surgery. This thesis aimed to investigate cerebral metabolism and perfusion abnormalities in pigs during hypothermic circulatory arrest, selective antegrade cerebral perfusion (SACP) and extracorporeal circulation following progressive venous stasis. LÄS MER

  4. 3. Positron Emission Tomography (PET) Studies in Anxiety Disorders

    Författare :Åsa Michelgård Palmquist; Mats Fredrikson; Lars von Knorring; Hans Ågren; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Positron emission tomography; PET; amygdala; fear; anxiety; anxiety disorders; specific phobia; social phobia; posttraumatic stress disorder; PTSD; regional cerebral blood flow; rCBF; substance P; SP; neurokinin 1 receptor; NK1; GR205171; STAI-S; Psychiatry; Psykiatri; Neurobiology; Neurobiologi; Neuroscience; Neurovetenskap; Experimental brain research; Experimentell hjärnforskning; Molecular neurobiology; Molekylär neurobiologi; Radiation biology; Strålningsbiologi; Neurobiology; Neurobiologi; Neurobiology; Neurobiologi;

    Sammanfattning : Anxiety disorders are very common and the primary feature is abnormal or inappropriate anxiety. Fear and anxiety is often mediated by the amygdala, a brain structure rich in substance P (SP) and neurokinin 1 (NK1) receptors. LÄS MER

  5. 4. Bedside monitoring of cerebral energy metabolism using intracerebral microdialysis during neuro intensive care

    Författare :Nils Ståhl; Neurokirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuropsykologi; neurofysiologi; Neurologi; neuropsychology; Neurology; glycerol.; glutamate; pyruvate; lactate; glucose; hyperglycaemia; intensive care; brain injury; Human; cerebral microdialysis; neurophysiology;

    Sammanfattning : In clinical situations with raised intracranial pressure (ICP) and impending insufficient cerebral blood flow (ischaemia), bedside information about energy metabolism in the brain would be helpful. Microdialysis is a technique that makes it possible to monitor the interstitial concentrations of various compounds in an organ. LÄS MER