نتایج جستجو برای: motor mechanism

تعداد نتایج: 714690  

Journal: :Journal of Experimental Biology 1939

A. Malekizadeh D. Bakhtiarian H. Homaei, M. Shahbazi Tak-Abi

The need for simulation of human foot mechanism has made researchers and engineers move towards different patterns to describe this movement. In this regard, optimal solutions such as energy consumption, accuracy, etc. are of utmost importance. In this paper, efforts have been made to present a new solution by designing a fully two-dimensional six-bar mechanism with one degree of freedom so tha...

This paper proposes a new sliding mode control (SMC)  based model reference adaptive system (MRAS) for sensorless indirect field oriented control (IFOC) of a single-sided linear induction motor (SLIM). The operation of MRAS speed estimators dramatically depends on adaptation mechanism. Fixed-gain PI controller is conventionally used for this purpose which may fail to estimate the speed correctl...

Afshin Khara, Kamran Aghakhani, Mohsen Bijandi, Seyyed Hossein Eslami,

Head injury is one of the most important types of injury and is responsible for most of the deaths due to trauma. Low-income and middle-income countries face with more risk factors, but they still lack adequate health-care capacity to deal with complications. Trauma literally means the damage and injury, and head injury was defined as physical damage to the brain or skull caused by external for...

Journal: :Cerebral cortex 2010
J M Conner M Kulczycki M H Tuszynski

The cholinergic basal forebrain projects throughout the neocortex, exerting a critical role in modulating plasticity associated with normal learning. Cholinergic modulation of cortical plasticity could arise from 3 distinct mechanisms by 1) "direct" modulation via cholinergic inputs to regions undergoing plasticity, 2) "indirect" modulation via cholinergic projections to anterior, prefrontal at...

Journal: :Journal of neurophysiology 2012
Douglas A Keen Li-Wei Chou Michael A Nordstrom Andrew J Fuglevand

Motor units within human muscles usually exhibit a significant degree of short-term synchronization. Such coincident spiking typically has been attributed to last-order projections that provide common synaptic input across motor neurons. The extent of branched input arising directly from cortical neurons has often been suggested as a critical factor determining the magnitude of short-term synch...

2013
Louis Laviolette Marie-Cécile Niérat Anna L. Hudson Mathieu Raux Étienne Allard Thomas Similowski

INTRODUCTION In humans, cortical mechanisms can interfere with autonomic breathing. Respiratory-related activation of the supplementary motor area (SMA) has been documented during voluntary breathing and in response to inspiratory constraints. The SMA could therefore participate in the increased resting state of the respiratory motor system during wake (i.e. "wakefulness drive to breathe"). M...

Journal: :Current Biology 2016
Adjia Hamadjida Melvin Dea Joan Deffeyes Stephan Quessy Numa Dancause

In primates, the refinement of motor behaviors, in particular hand use, is associated with the establishment of more direct projections from primary motor cortex (M1) onto cervical motoneurons [1, 2] and the appearance of additional premotor and sensory cortical areas [3]. All of these areas have reciprocal connections with M1 [4-7]. Thus, during the evolution of the sensorimotor network, the n...

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