Sökning: "White matter changes"

Visar resultat 16 - 20 av 88 avhandlingar innehållade orden White matter changes.

  1. 16. Dynamical atmospheres and winds of M-type AGB stars

    Författare :Sara Bladh; Susanne Höfner; Kjell Eriksson; Patricia Whitelock; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Late-type stars; AGB stars; stellar winds; atmospheres; mass-loss; outflows; circumstellar matter; dust; hydroynamics; radiative transfer; Astronomy with specialization in Astrophysics; Astronomi med intiktning mot astrofysik;

    Sammanfattning : Mass loss, in the form of slow stellar winds, is a decisive factor for the evolution of cool luminous giants, eventually turning them into white dwarfs. These dense outflows are also a key factor in the enrichment of the interstellar medium with newly produced elements from the interior of these stars. LÄS MER

  3. 17. The effect of physical activity and other lifestyle factors on dementia, Alzheimer’s disease and structural brain changes

    Författare :Suvi Rovio; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Dementia; Alzheimer´s disease; physical activity; lifestyle factors; apoE; brain volume; white matter lesions;

    Sammanfattning : Dementia is one of the major public health concerns and its impact is increasing rapidly in aging populations. Recent research has suggested that the origin of dementia and Alzheimer´s disease (AD), which is the most common form of dementia, is multifactorial including both genetic and environmental factors. LÄS MER

  4. 18. On age related changes in axons and glia of the central nervous system

    Författare :Susanna Kullberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Aging; synaptic input; spinal cord; hippocampus; amino acid neurotransmitters; astrocyte; microglia; oligodendroglia; C bouton; cholinergic; monoaminergic; cytokine;

    Sammanfattning : A growing body of evidence shows that phenotypic changes including axon aberrations, rather than loss of neurons, account for behavioral impairments during aging. The present thesis was undertaken to investigate the occurrence of axon aberrations in relation to transmitter identity, glial reaction and sensorimotor disturbances. LÄS MER

  5. 19. Structural and functional changes in the brain after surgically repaired median nerve injury

    Författare :Per F. Nordmark; Roland S. Johansson; Henrik Ehrsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Humans; Hand; Touch; Peripheral nerve injury; Magnetic resonance imaging; Somatosensory Cortex; Cortical plasticity; fysiologi; Physiology; handkirurgi; hand surgery;

    Sammanfattning : Despite the best available surgical repair, traumatic median nerve injury within the forearm typically causes lifelong impairment in hand function. This stems from an inadequate reinnervation of the nerves supporting sensory functions of the thumb, index and long finger, and of nerves supplying intrinsic hand muscles. LÄS MER

  7. 20. Regimented language training : Changes to brain and behaviour following intensive non-native language learning

    Författare :Johan Mårtensson; Institutionen för psykologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cortical thickness; Hippocampus; Plasticity; Language acquisition; Associative memory; Transfer; Education;

    Sammanfattning : The influence of foreign-language acquisition on adult brain structure remains mostly unexplored. Whilst several cross-sectional studies have led to further understanding of how language can affect brain structure, only a few longitudinal studies have been conducted. LÄS MER