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Showing result 1 - 5 of 9 swedish dissertations matching the above criteria.

  2. 1. The functional role of the lateral olivocochlear system and mechanisms underlying sound condtioning

    Author : Xianzhi Niu; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Cochlea; dopamine; tyrosine hydroxylase; sound conditioning; apoptosis; acoustic trauma; lateral olivocochlear nucleus; D1 receptor; efferents;

    Abstract : Sound conditioning is a process induced by a low-level, non-damaging acoustic stimulus that provides protection against subsequent detrimental forms of acoustic trauma. Many hypotheses have been advanced to explain the effect of sound conditioning, but the mechanisms underlying this phenomenon are still not yet known. READ MORE

  4. 2. Structural and functional studies on nerve regeneration in the rat

    Author : Bo Povlsen; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Peripheral nerves cannot be repaired, but they may be helped to regenerate. The results of surgical treatment of nerve injuries remain disappointing, however. This is a biological rather than a technical challenge. READ MORE

  5. 3. The γ-aminobutyric acid and proton signaling systems in the zebrafish brain : Characterization and effect of stress

    Author : Arianna Cocco; Svante Winberg; William H. J. Norton; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; g-aminobutyric acid GABA ; GABAA receptors; adult zebrafish; central nervous system; gene expression profiling; extracellular acidification.; Biokemi; Biochemistry;

    Abstract : The central nervous system of vertebrates is continuously processing sensory information relayed from the periphery, integrating it and producing outputs transmitted to efferents. In the brain, neurons employ an array of messenger molecules to filter afferent information and finely regulate synaptic transmission. READ MORE

  6. 4. Sensory neurons : stem cells and development

    Author : Jens Hjerling-Leffler; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Sensory neuron; stem cells; development; boundary cap; GABA; TRPV 1; TRPA 1; TRPM8; calcium imaging; Foxs 1; SSEA-1; Schwann cells;

    Abstract : The sensory nervous system is the only means we have of communicating with the surrounding world. The neurons responsible for the sensation of pain, touch, the ability to know the position of our limbs and part of maintenance of body posture are located in the dorsal root ganglia (DRG). READ MORE

  7. 5. Regulation of the exocrine pancreas in growing pigs, with special emphasis on entero-pancreatic reflexes

    Author : Lena Evilevitch; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; kidney bean lectin; Animal physiology; Djurfysiologi; duodenum; entero-pancreatic reflex; insulin; lipas; amylas; trypsin; weaning; development; maturation; inhibition; CCK-receptors; Exocrine pancreas; CCK; pig;

    Abstract : The regulation of the exocrine pancreas has been under thorough investigation for many decades. In rats, cholecystokinin (CCK) is considered to be the major gut hormone stimulating the pancreas to releasing the digestive enzymes. READ MORE