Search for dissertations about: "Brain natural"

Showing result 1 - 5 of 438 swedish dissertations containing the words Brain natural.

  2. 1. Brain morphology and behaviour in the guppy (Poecilia reticulata) : Effects of plasticity and mosaic brain evolution

    Author : Stephanie Fong; Niclas Kolm; Björn Rogell; Stephen Montgomery; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; brain plasticity; cognition; reversal learning; spatial learning; directed selection; mosaic brain; heritability; brain morphology; boldness; relative telencephalon size; inhibitory control; detour task; Poecilia reticulata; etologi; Ethology;

    Abstract : Understanding how brains have evolved and subsequently culminated in the huge variation in brain morphology among contemporary vertebrate species has fascinated researchers for many decades. It has been recognized that brain morphology is both genetically and environmentally determined. READ MORE

  4. 2. Mass Spectrometry-based Neuroproteomics : Deciphering the Human Brain Proteome

    Author : Sravani Musunuri; Jonas Bergquist; Ganna Shevchenko; Jean-Charles Sanchez; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Brain; Proteomics; Mass spectrometry; Alzheimer s disease; Traumatic brain injury; Membrane proteins; Sample preparation; Kemi med inriktning mot analytisk kemi; Chemistry with specialization in Analytical Chemistry;

    Abstract : Mammalian brain is challenging to study due to its heterogeneity and complexity. However, recent advances in molecular imaging, genomics and proteomics have contributed significantly to achieve insights into molecular basis of brain function and pathogenesis of neurological disorders. READ MORE

  5. 3. Ion escape from Mars : measurements in the present to understand the past

    Author : Robin Ramstad; Stas Barabash; Yoshifumi Futaana; David Brain; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mars; escape; solar wind; evolution; CME; coupling; plasma; atmosphere; Space Physics; rymdfysik;

    Abstract : Present-day Mars is a cold and dry planet with a thin CO2-dominated atmosphere comprising only a few ­­­mbar pressure at low altitudes. However, the Martian surface is marked with valley networks, hydrated mineral clays, carbonates and the remains of deltas and meandering rivers, i.e. READ MORE

  6. 4. Segmentation and Visualisation of Human Brain Structures

    Author : Roger Hult; Ewert Bengtsson; Lennart Thurfjell; Håkan Hall; Ingrid Agartz; Arvid Lundervold; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bildanalys; segmentation; visualisation; brain; cortex; hippocampus; autoradiography; MRI; PET; ROI; Bildanalys; Image analysis; Bildanalys; Computerized Image Analysis; datoriserad bildanalys;

    Abstract : In this thesis the focus is mainly on the development of segmentation techniques for human brain structures and of the visualisation of such structures. The images of the brain are both anatomical images (magnet resonance imaging (MRI) and autoradigraphy) and functional images that show blood flow (functional magnetic imaging (fMRI), positron emission tomography (PET), and single photon emission tomograpy (SPECT)). READ MORE

  7. 5. Why and how brain size evolves : Sociality, predation and allometry

    Author : Wouter van der Bijl; Niclas Kolm; Joah Madden; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; brain size; brain size evolution; encephalization; predation; predator inspection; sociality; animal contest; constraint; etologi; Ethology;

    Abstract : The evolution of the vertebrate brain has remained a topic of intense interest from biologists over many decades. Evolutionary biologists have seen it as an intriguing example of how the size and structure of a trait evolves across large phylogenies and under body size constraints, with both large shifts in deep evolutionary time and continuous smaller scale adaptation. READ MORE