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Nonlinear identification of stretch reflex dynamics
Annals of Biomedical Engineering, 1988The objective of this study was to use nonlinear identification techniques to study the dynamics of stretch reflexes in the human calf muscles (gastrocnemius-soleus). Stochastic perturbations of ankle position were applied while subjects maintained a constant, tonic contraction of gastrocnemius-soleus.
R E, Kearney, I W, Hunter
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STRETCH REFLEXES OF THE NORMAL INFANT
Developmental Medicine & Child Neurology, 1986Tendon-jerk reflexes were tested in normal, fullterm infants aged one to four days. EMGs were recorded from gastrocnemius-soleus and tibialis anterior muscles. Reflex-like EMGs were evoked when tapping sites which should not excite the muscles from which that activity is recorded--this included the simultaneous activation of antagonistic muscles by a ...
B M, Myklebust +2 more
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Stretch Reflexes and Parkinsonian Tremor
1987By coupling human limbs to a machine, which drives a single joint through sinusoidal flexion-extension movements, it is often possible to entrain the resting tremor of Parkinson's disease. Entrainment is most likely to occur when the imposed movement is large in amplitude and close in frequency to the spontaneous tremor.
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Stretch reflex and H-reflex during human walking
Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2002The H-reflex and the stretch reflex modulation during gait have both been described in the literature as high during the stance phase and suppressed throughout the swing phase. To illuminate the difference between the two methodologies, both types of reflexes was evoked in the same subjects within the same experiment.
Andersen, Jacob Buus, Sinkjær, Thomas
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Reduced stretch-reflex sensitivity after exhausting stretch-shortening cycle exercise
European Journal of Applied Physiology and Occupational Physiology, 1996The stretch-shortening cycle (SSC) is an effective and natural form of muscle function but, when repeated with sufficient intensity or duration, it may lead to muscle damage and functional defects. A reduced tolerance to impact has been reported, which may be partly attributed to a reduced stretch-reflex potentiation.
C, Nicol +4 more
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Disability and Rehabilitation, 2004
To characterize the stretch reflex response of the biceps brachii in stroke patients with elbow spasticity (prior to or within 15 min of treatment with botulinum toxin) and non-impaired volunteers with the aim of quantifying the stretch reflex excitability and observe the differences between the groups.A cross-sectional study. Stretch reflexes from the
Salazar-Torres JJ +5 more
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To characterize the stretch reflex response of the biceps brachii in stroke patients with elbow spasticity (prior to or within 15 min of treatment with botulinum toxin) and non-impaired volunteers with the aim of quantifying the stretch reflex excitability and observe the differences between the groups.A cross-sectional study. Stretch reflexes from the
Salazar-Torres JJ +5 more
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Are proprioceptive‐induced reflex seizures epileptically‐enhanced stretch reflex manifestations?
Epileptic Disorders, 2012ABSTRACTIn reflex seizures induced by proprioceptive stimuli, the activated network may be identified as a single anatomo‐functional circuit; the sensory‐motor network. These seizures may be considered as epileptically‐enhanced stretch reflexes. Proprioceptive reflex epilepsies are a good example of the so‐called “system epilepsies”.
Anna, Szűcs +8 more
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1998
Let us examine the lowest motor control level for which the neural structure is delimited by the major identified neurons of the spinal cord (i.e., α- and γ-motoneurons, Ia interneurons, and Renshaw cells) and by extrafusal and intrafusal muscle fibers.
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Let us examine the lowest motor control level for which the neural structure is delimited by the major identified neurons of the spinal cord (i.e., α- and γ-motoneurons, Ia interneurons, and Renshaw cells) and by extrafusal and intrafusal muscle fibers.
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An Assessment of Stretch Reflex Function
1976Publisher Summary Most investigators believe that the stretch reflex is an important mechanism in the regulation of posture and movement, but the precise nature of its actions and the importance of this reflex in intact animals and humans have remained unclear.
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Dynamic properties of stretch reflex
Neurophysiology, 1990Dynamic aspects of stretch and unloading reflexes were investigated in the hindlimb extensor muscles of decerebrate cats. A complex transformation of non-linear effects inherent in the dynamics of the deafferented muscle was seen to occur under reflex control without hysteris (underlying non-linear static qualities of the muscle) being suppressed ...
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