Results 121 to 130 of about 4,060 (164)

Age-related Changes in Monosynaptic Reflex Excitability

Journal of Gerontology, 1982
The excitability of the H-reflex was tested in a younger group (19 to 31 years) and an older group (60 to 72 years) of subjects. The threshold for the H-reflex was higher and the reflex latency was 7 msec longer in the older group of subjects. Also, the H-reflex amplitude was significantly smaller, longer in duration and polyphasic in shape whereas the
M A, Sabbahi, E M, Sedgwick
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Modulation of cat monosynaptic reflexes by substance P

Brain Research, 1980
Substance P (SP) applied by iontophoresis at different current strengths to single motoneurons of cat spinal cord did not cause these units to discharge. SP produced a gradual and prolonged change in synaptic excitability as measured by response to dorsal root stimulation. The effect outlasted application of SP.
W A, Krivoy, J R, Couch, J M, Stewart, E, Zimmermann   +3 more
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Descending Monosynaptic and Reflex Control of γ‐Motoneurones

Acta Physiologica Scandinavica, 1969
AbstractThe supraspinal and reflex control of γ‐motoneurones has been studied with intra‐ and extracellular recording from lumbosacral γ‐motoneurones in the cat. Monosynaptic EPSPs were recorded in some γ‐motoneurones on stimulation of the brain stem.
S, Grillner, T, Hongo, S, Lund
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Central effects of succinylcholine and decamethonium on monosynaptic reflexes

American Journal of Physiology-Legacy Content, 1961
Observations have been made in cats upon central mechanisms responsible for reduction in monosynaptic responses of triceps surae motoneurons following intravenous injection of decamethonium or succinylcholine. Two-thirds of extensor motoneurons show an increase in random firing under the influence of these drugs.
B, FUJIMORI, E, ELDRED
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An electrophysiological investigation into the monosynaptic H-reflex in the rat

Brain Research, 1998
In order to set up a non-invasive, reliable and reproducible model for investigating alpha-motoneuronal activity, we studied the electrophysiological features of a monosynaptic H-reflex in anaesthetised intact rats, anaesthetised and non-anaesthetised rats transected at the level of the obex.
M, Gozariu, V, Roth, F, Keime, D, Le Bars, J C, Willer   +4 more
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Morphine and meperidine on bulbospinal inhibition of the monosynaptic reflex

European Journal of Pharmacology, 1973
Abstract The effects of morphine and meperidine were studied on the ventromedial bulbospinal inhibition of the monosynaptic reflex (MRS) in decerebrate unanesthetized cats. Administration of these agents in accumulative doses (0.5–16 mg/kg, i.v.) progressively blocked this inhibition.
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[Monosynaptic spinal reflex in epilepsy].

Zhurnal nevropatologii i psikhiatrii imeni S.S. Korsakova (Moscow, Russia : 1952), 1978
In 33 patients with generalized convulsive seizures a monosynaptic spinal reflex was studied. In an interattack period the author observed its clear asymmetry which was combined with a contralateral situation of epileptogenic focus on the EEG. In the majority of cases in patients with diffusive paroxysmal activity on the EEG asymmetry in the quantity ...
L V, Kitaeva, Iu D, Kalashnikov
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The synaptic basis of the monosynaptic stretch reflex

Trends in Neurosciences, 1981
Abstract The synapses formed on motoneurones by sensory nerves from primary stretch receptors in muscle have been the model for studies on the mechanisms of excitatory synaptic transmission in the CNS. Recent refinements in electrophysiological and anatomical techniques, and the application of cable theory to motoneurone dendrites, have produced new ...
Stephen Redman, Bruce Walmsley
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Monosynaptic spinal reflexes in the hooded rat

Experimental Neurology, 1963
Abstract Post-tetanic potentiation was examined in a number of monosynaptic reflex pathways of the hind leg and lower lumbar region of the spinal cord in decerebrate, high and low spinalized, and intact rats. Relatively little post-tetanic potentiation, even following severe tetani, was observed.
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MONOSYNAPTIC REFLEX AND NATURAL SLEEP IN THE CAT

Journal of Neurophysiology, 1965
K, KUBOTA, Y, IWAMURA, Y, NIIMI
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