نتایج جستجو برای: motor asymmetry

تعداد نتایج: 194237  

Information asymmetry in stock market can increase the risk of investment which in turn increases the capital cost of firms. Bhattacharya (1979) proposed a hypothesis that states dividend can act as a powerful signal in order to solve information asymmetry problem. We measured information asymmetry by lack of earnings transparency. Therefore we examine the effect of earnings transparency on cap...

2017
Kathryn S. Hayward Julia Schmidt Keith R. Lohse Sue Peters Julie Bernhardt Natasha A. Lannin Lara A. Boyd

To build an understanding of the neurobiology underpinning arm recovery in people with severe arm impairment due to stroke, we conducted a pooled individual data systematic review to: 1) characterize brain biomarkers; 2) determine relationship(s) between biomarkers and motor outcome; and 3) establish relationship(s) between biomarkers and motor recovery. Three electronic databases were searched...

Journal: :NeuroImage 2010
Shoshana Spring Jason P. Lerch Monica K. Wetzel Alan C. Evans R. Mark Henkelman

Asymmetries of multiple components of the rodent cerebrum have been described at various levels of organization. Yet, despite its ubiquitous nature, many confusing and sometimes contradictory reports regarding structural asymmetries in the rodent brain have been published. There is a need, therefore, for a whole-brain imaging analysis technique for asymmetry studies that is both accurate, repro...

2016
Tarja Lönnfors-Weitzel Thilo Weitzel Johannes Slotboom Claus Kiefer Claudio Pollo Michael Schüpbach Markus Oertel Alain Kaelin Roland Wiest

INTRODUCTION Deep brain stimulation (DBS) nowadays is a well-established treatment of motor symptoms in Parkinson's disease. The subthalamic nucleus (STN) is a common target for DBS, because motor improvements have been shown to be superior to best medical therapy, if DBS electrodes have been appropriately positioned. DBS target identification can be assisted by MRI beyond structural imaging by...

Journal: :The European journal of neuroscience 1998
R Kawashima M Matsumura N Sadato E Naito A Waki S Nakamura K Matsunami H Fukuda Y Yonekura

The purpose of this study was to investigate the cortical motor areas activated in relation to unilateral complex hand movements of either hand, and the motor area related to motor skill learning. Regional cerebral blood flow (rCBF) was measured in eight right-handed healthy male volunteers using positron emission tomography during a two-ball-rotation task using the right hand, the same task us...

Journal: :Facta universitatis. Series electronics and energetics 2021

This article proposed a detection scheme for three-phase Line start permanent magnet synchronous motor (LSPMSM) under different levels of static eccentricity fault. Finite element method is used to simulate the healthy and faulty LSPMSM with percentages eccentricity. An accurate laboratory test experiment performed evaluate index. Effects loading condition on are also investigated. The fault re...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2006
J Christof M Gebhardt Anabel E-M Clemen Johann Jaud Matthias Rief

Myosin-V is a linear molecular motor that hydrolyzes ATP to move processively toward the plus end of actin filaments. Motion of this motor under low forces has been studied recently in various single-molecule assays. In this paper we show that myosin-V reacts to high forces as a mechanical ratchet. High backward loads can induce rapid and processive backward steps along the actin filament. This...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1988
M Swash C L Scholtz G Vowles D A Ingram

The spinal cords of 10 cases of motor neuron disease were compared with those of six age-matched controls using myelin and silver impregnation methods, and the Marchi reaction for myelin degradation products. These studies revealed striking asymmetry in involvement of the lateral and anterior corticospinal tracts, without concordance in the pattern of involvement of these crossed and uncrossed ...

Journal: :Chaos 2005
Heiner Linke Matthew T Downton Martin J Zuckermann

Brownian motors are nonequilibrium systems that rectify thermal fluctuations to achieve directed motion, using spatial or temporal asymmetry. We provide a tutorial introduction to this basic concept using the well-known example of a flashing ratchet, discussing the micro- to nanoscopic scale on which such motors can operate. Because of the crucial role of thermal noise, the characterization of ...

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