Results 251 to 260 of about 1,460,414 (293)
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Motor-gear linkage in a motor-transmission module
Russian Engineering Research, 2010Recommendations are made regarding the design of the motor-gear link in an integrated motor-transmission system. Algorithms are presented for calculating a cylindrical involute gear transmission with a small number of pinion teeth, the glued joint of the pinion with the gear system’s input shaft, and the pinion body.
A. S. Ivanov, S. V. Murkin
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Neostriatal modulation of motor cortex excitability
Brain Research, 1994The influence of the basal ganglia motor loop on motor cortex function was examined by pharmacologically altering neostriatal activity while monitoring the electrical stimulation thresholds for eliciting movements of the ipsilateral and contralateral motor cortex in ketamine anesthetized rats. Repeated unilateral intraneostriatal infusions (1-3) of the
L J, Ryan, D J, Sanders
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Modulation of somatosensory perception by motor intention
Cognitive Neuroscience, 2011The intention to execute a movement can modulate our perception of sensory events; however, theoretical accounts of these effects, and also empirical data, are often contradictory. We investigated how perception of a somatosensory stimulus differed according to whether it was delivered to a limb being prepared for movement or to a nonmoving limb.
Parkinson, A. +5 more
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Serotonergic modulation of spinal motor control
Current Opinion in Neurobiology, 2015Serotonin (5-HT) is a monoamine that powerfully modulates spinal motor control by acting on intrasynaptic and extrasynaptic receptors. Here we review the diversity of 5-HT actions on locomotor and motoneuronal activities. Two approaches have been used on in vitro spinal cord preparations: either applying 5-HT in the extracellular medium or inducing its
Perrier, Jean-Francois Marie +1 more
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Inhibition for gain modulation in the motor system
Experimental Brain Research, 2022Signatures of inhibition within the cortico-spinal pathway are frequently observed during action preparation in humans. Popular theoretical and computational models highlight a critical role for inhibition as the suppressor of motor system output, e.g., to withhold undesired action tendencies or to stop ongoing movements. However, inhibition frequently
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Neurotrophic Modulation of Motor Neuron Development
The Neuroscientist, 2008Neurotrophic factors (NTFs) are a pleiotropic group of secreted growth factors that regulate multiple aspects of neuronal development, including the regressive event of cell death. Skeletal muscleinnervating lower motoneurons (MNs) of the brain stem and spinal cord comprise one population of central neurons in which programmed cell death (PCD) during ...
Thomas W, Gould, Hideki, Enomoto
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Affective modulation of inspiratory motor drive
Psychophysiology, 2008AbstractThe present study aimed to explore inspiratory motor drive as measured by inspiratory occlusion pressure (P100) during affective picture viewing. P100 is the decrease in mouth pressure that develops 100 ms after an inspiratory effort against a closed breathing circuit.
Ilse, Van Diest +5 more
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Serotonergic modulation of locust motor neurons
Journal of Neurophysiology, 19951. The effects of the putative endogenous neuromodulator serotonin (5-HT) on the fast extensor and flexor tibiae motor neurons in the locust (Schistocerca gregaria) metathoracic ganglion, were analyzed. 2. 5-HT consistently increased the duration of the fast extensor spike and usually reduced the afterhyperpolarization, although this effect was less ...
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Cerebellar Microcomplexes and the Modulation of Motor Pattern Generators
Autonomous Robots, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jacob Spoelstra, Michael A. Arbib
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Pulsewidth Modulated Inverter Motor Drives with Improved Modulation
IEEE Transactions on Industry Applications, 1975The performance of inverter drives, which use the pulsewidth modulated (PWM) technique to control motor applied voltage and frequency, are critically influenced by the choice of the modulation policy used in the control circuits. This paper deals with practical inverter drives for squirrel cage induction motors and presents some basic considerations on
Jacob Zubek +2 more
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