Search for dissertations about: "motor"

Showing result 21 - 25 of 1302 swedish dissertations containing the word motor.

2. 21. Imaging imagining actions

   Author : CJ Olsson; Lars Nyberg; A.Mark Williams; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mental training; motor training; novices; imaging; athletes; fMRI; internal imagery; motor representation; brain systems; practice; learning; transfer; active; Physiology; Fysiologi;

   Abstract : Mental training has been studied extensively for the past century but we are still not completely sure how it affects brain and behavior. The aim of this doctoral thesis was to examine one aspect of mental training i.e. motor imagery. READ MORE

4. 22. Mechanisms of motor and non-motor complications in experimental parkinsonism

   Author : Carina Plewnia; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Parkinson’s disease (PD), one of the most common neurodegenerative disorders, is classically characterized by the progressive loss of midbrain dopaminergic neurons and by the emergence of cardinal motor symptoms including rigidity, tremor and bradykinesia. PD treatment relies on pharmacological dopamine replacement, which is the most effective therapy to alleviate motor symptoms. READ MORE

5. 23. Temporal dynamics of brain plasticity : characterizing brain structural changes during skill acquisition

   Author : Tomás Mediavilla; Daniel Marcellino; Alexandra Badea; Umeå universitet; []
   Keywords : 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;

   Abstract : 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. READ MORE

6. 24. Dopamine and the affective-cognitive gradient in the human striatum studied with multimodal brain imaging

   Author : Filip Grill; Anna Rieckmann; Lars Nyberg; Alison Adcock; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; dopamine; striatum; incentive; motor; associative; reinforcement learning; reward prediction error; positron emission tomography; functional magnetic resonance imaging; PET MR; cognitive modelling;

   Abstract : Both dopamine and the dopamine rich brain area, striatum, have been linked to behaviors related to incentives, motor action, and associative processing. Most of the cortex sends projections to the striatum, these connections have been described as a gradient organization representing a repertoire of functional behaviors. READ MORE

7. 25. Numerical and experimental study of performance of a hydraulic motor

   Author : Leon Dahlén; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydraulic fluid; hydrostatic transmission; hydraulic motor; Engineering mechanics; Teknisk mekanik; Maskinelement;

   Abstract : The aim of this study was to develop an understanding of the fluid properties that influence the efficiency of hydraulic systems in a steady-state, especially components in hydrostatic transmission systems under different running conditions. The aim has also been to investigate and model the sources of losses in hydraulic machines, in order to estimate the losses, taking fluid properties into account. READ MORE