Avancerad sökning

Hittade 5 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Cerebellar pathways and mechanisms in classical conditioning

   Författare :Pär Svensson; Neurofysiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurology; Climbing Fibers; Conditioned Response; Mossy Fibers; Ferret; Eyeblink; Cerebellum; Classical Conditioning; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi;

   Sammanfattning : It has been suggested that the cerebellar mossy fibre afferents transmit the conditioned stimulus (CS) information to the cerebellum. Several studies are consistent with this suggestion but alternative explanations have not been excluded. LÄS MER

3. 2. Mechanisms of Hyperexcitability in the Kindling Model of Epilepsy

   Författare :Eskil Elmer; Sektion IV; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuropsychology; Neurology; Plasticity; Dentate gyrus; Mossy fibers; neurophysiology; Neurologi; neuropsykologi; neurofysiologi;

   Sammanfattning : Epilepsy is a syndrome characterized by recurring attacks of sudden, excessive and synchronous discharge in populations of cerebral neurons. Kindling is an animal model for complex partial epilepsy, and is particularly useful for studies on the development of the abnormal excitability underlying the generation and spread of epileptic seizures. LÄS MER

4. 3. Neuropeptide expression in mouse disease models

   Författare :Margarita Diez; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Alzheimers disease; autoradiographic ligand binding; CCK; degeneration; dynorphin; enkephalin; galanin; immunohistochemistry; in situ hybridization; lesion; magnetic resonance imaging; megencephaly; NPY; prion infection; substance P.;

   Sammanfattning : The role of neuropeptides and the significance of peptidergic mechanisms in neurodegenerative diseases are still relatively unexplored. In the periphery, nerve injury results in dramatic changes in the expression of neuropeptides (and other molecules). LÄS MER

5. 4. The central cervical nucleus in the rat : studies on connectivity, function and chemical transmission

   Författare :Birger Ragnarson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Amino acid transmitter AMPA Anterograde Cerebellum Cervical Choleragenoid Electron microscopy Freeze-substitution Glutamate Horseradish peroxidase Ia primary afferent Immunogold Immunocytochemistry Locomotion Motoneuron NMDA Neck muscle Postembedding;

   Sammanfattning : The central cervical nucleus (CCN) is a spinocerebellar cell group in the upper cervical spinal cord (rat: Cl-C3), that is known to receive a powerful primary afferent input from, the upper cervical spinal nerves (C 1-C4), originating mainly from muscle spindle afferents in deep dorsal neck muscles and from the ipsi- and contralateral vestibular nuclei. It projects to the cerebellar vermis bilaterally and to all the vestibular nuclei contralaterally. LÄS MER

7. 5. Development of a polymer based neural probe - How to record intracortical neural activity while minimizing the tissue response

   Författare :Fredrik Ejserholm; Avdelningen för Biomedicinsk teknik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Neural Probes; Electrode Modification; Polymer; Neurophysiology; OSTE ;

   Sammanfattning : Intracortical neural probes have in the last couple of years been developed from stiff single probes to stiff multi-electrode neural probes to flexible multi-electrode neural probes. One reason for the change in design is that more than one recording/stimulation electrode, as in the case with a single wire, is needed for more advanced studies. LÄS MER