Results 211 to 220 of about 15,581 (263)

Sensitivity of H-Reflexes and Stretch Reflexes to Presynaptic Inhibition in Humans

Journal of Neurophysiology, 1998
Morita, H., N. Petersen, L.O.D. Christensen, T. Sinkjær, and J. Nielsen. Sensitivity of H-reflexes and stretch reflexes to presynaptic inhibition in humans. J. Neurophysiol. 80: 610–620, 1998. The sensitivity of soleus H-reflexes, T-reflexes, and short-latency stretch reflexes (M1) to presynaptic inhibition evoked by a weak tap applied to the biceps ...
Morita, H, Petersen, Nicolas, Christensen, LOD, Sinkjær, Thomas, Nielsen, Jens Bo   +4 more
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Regulation of wrist stiffness by the stretch reflex

Journal of Biomechanics, 1989
In restoring the angular position after a displacement, the role of the muscle stretch reflex was investigated by comparing the restored angular torques and angular positions in the wrist under ischaemic and non-ischaemic conditions in normal human subjects.
T, Sinkjaer, R, Hayashi
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Regulatory actions of human stretch reflex

Journal of Neurophysiology, 1976
1. The stretch reflex in the elbow flexor musculature was studied in 23 human subjects. The subjects were required to establish an initial force equivalent to 10% maximum at a prescribed initial length; mechanical disturbances delivered at random times increased load force to 15% or reduced it to 5%.
P E, Crago, J C, Houk, Z, Hasan
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Modulation of the tonic stretch reflex by monoamines

European Journal of Pharmacology, 1979
The effects of L-DOPA and 5-HTP on the tonic stretch reflex (TSR) in the decerebrate rat were studied. L-DOPA facilitated the TSR in a dose-dependent manner. The facilitation of the TSR was blocked by pimozide. A sensitive electromygraphic (EMG) technique capable of recording single motor unit discharges was used.
J W, Commissiong, E M, Sedgwick
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Stretch Reflexes and Parkinsonian Tremor

1987
By 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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Development of the monosynaptic stretch reflex circuit

Current Opinion in Neurobiology, 2003
Significant advances have been made during the past few years in our understanding of how the spinal monosynaptic reflex develops. Transcription factors in the Neurogenin, Runt, ETS, and LIM families control sequential steps of the specification of various subtypes of dorsal root ganglia sensory neurons. The initiation of muscle spindle differentiation
Chen, H. -H., Hippenmeyer, S., Arber, S., Frank, E.   +3 more
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Adaptive plasticity in the spinal stretch reflex

Brain Research, 1983
Monkeys can change the amplitude of the spinal stretch reflex without change in initial alpha motor neuron tone, as measured by EMG, or in initial muscle length. Change is apparent in 5-10 days, continues to develop over weeks, and persists during inactive periods.
J R, Wolpaw, V A, Kieffer, R F, Seegal, D J, Braitman, M G, Sanders   +4 more
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An Assessment of Stretch Reflex Function

1976
Publisher 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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Stretch reflexes in human abdominal muscles

Experimental Brain Research, 2004
Homonymous and heteronymous reflex connections of the abdominal muscles were investigated by the application of a tap to the muscle belly and observation of surface electromyographic responses. Reflex responses of the following abdominal muscles were investigated both ipsilateral and contralateral to the tap: rectus abdominis (RA), external oblique (EO)
Beith, I D, Harrison, P J
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Voluntary modulation of human stretch reflexes

Experimental Brain Research, 2007
It has been postulated that the central nervous system (CNS) can tune the mechanical behavior of a joint by altering reflex stiffness in a task-dependant manner. However, most of the evidence supporting this hypothesis has come from the analysis of H-reflexes or electromyogram (EMG) responses.
Daniel, Ludvig, Ian, Cathers, Robert E, Kearney   +2 more
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