Sökning: "White matter changes"

Visar resultat 6 - 10 av 88 avhandlingar innehållade orden White matter changes.

  1. 6. Psychological stress in relation to dementia and brain structural changes

    Författare :Lena Johansson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Psychological stress; distress; psychosocial life stressors; dementia; Alzheimer s disease; vascular dementia; white matter lesions; brain atrophy; epidemiology; longitudinal study; risk factors;

    Sammanfattning : Psychological stress has been recognized as an increasing public health problem with serious consequences in both physical and mental health. Women reported a higher prevalence of psychological stress, especially in midlife. LÄS MER

  3. 7. Photoluminescence Characteristics of III-Nitride Quantum Dots and Films

    Författare :Martin Eriksson; Per-Olof Holtz; Peder Bergman; Fredrik Karlsson; Volodymyr Khranovskyy; Yasuhiko Arakawa; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : III-Nitride semiconductors are very promising in both electronics and optical devices. The ability of the III-Nitride semiconductors as light emitters to span the electromagnetic spectrum from deep ultraviolet light, through the entire visible region, and into the infrared part of the spectrum, is a very important feature, making this material very important in the field of light emitting devices. LÄS MER

  4. 8. White matter pathology in normal pressure hydrocephalus and subcortical arteriosclerotic encephalopathy. Clinical, CSF and MRI aspects

    Författare :Mats Tullberg; Göteborgs universitet; []
    Nyckelord :Normal pressure hydrocephalus; Subcortical arteriosclerotic encephalopathy; MRI; White matter changes; Cerebrospinal fluid; Sulfatide; Neurofilament protein;

    Sammanfattning : Normal pressure hydrocephalus (NPH) and subcortical arteriosclerotic encephalopathy (SAE) are common causes of gait disturbance, cognitive impairment and urinary incontinence in the elderly. In spite of a primarily different pathogenesis with a potentially reversible CSF dynamic disturbance in NPH and an irreversible microangiopathy in SAE, patients with NPH and SAE can present with similar symptoms and exhibit white matter changes that are difficult to distinguish, constituting a diagnostic and therapeutic challenge. LÄS MER

  5. 9. Rainfall variability, soils and land use changes in the Ethiopian highlands

    Författare :Staffan Rosell; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rainfall change; soil productivity; tef; land-use changes; South Wollo; water harvesting;

    Sammanfattning : Most farmers in the Ethiopian highlands are dependent on rain-fed agriculture. The indigenous cereal tef is the most important crop for the farmers in the highlands. The central highland is an environmentally fragile area and a marginal area of Ethiopia with a recurring problem for the farmers to sustain an adequate agricultural production. LÄS MER

  7. 10. Temporal dynamics of brain plasticity : characterizing brain structural changes during skill acquisition

    Författare :Tomás Mediavilla; Daniel Marcellino; Alexandra Badea; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Motor learning; brain plasticity; structural plasticity; magnetic resonance imaging; voxel-based morphometry; tractography; connectivity; motor cortex; posterior parietal cortex; cerebellum; vesicular glutamate transporter;

    Sammanfattning : Traditionally, structural plasticity in the human brain has been considered to follow a linear or asymptotic increase over the course of training. However, recent studies using structural MRI revealed transient increases in grey matter volume (GMV) with learning. LÄS MER