Synchronization of action potentials in the spinal frog
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چکیده
منابع مشابه
Presynaptic action of barbiturates in the frog spinal cord.
The action of pentobarbital on primary afferents of the isolated frog spinal cord was analyzed with sucrose gap and intracellular recordings techniques. Pentobarbital in concentrations generally considered to be in the anesthetic range greatly prolonged presynaptic inhibition and also depolarized primary afferents. The depolarization was accompanied by an increase in excitability and resulted f...
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Studies were carried out to elucidate the mechanism of action of chlorphenesin carbamate (CPC) and to compare the effect of the drug with that of mephenesin on the isolated bullfrog spinal cord. Ventral and dorsal root potentials were recorded by means of the sucrose-gap method. CPC caused marked hyperpolarizations and depressed spontaneous activities in both of the primary afferent terminals (...
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Previous results in cylindrical volumes have shown that action potentials generate far-field potentials when experimental conditions are such that quadrupolar components of the action potential are reduced to an equivalent dipole. We now show that the same conclusions are also reached within a spherical volume, again recording far-field potentials from isolated bullfrog nerves. A mathematical p...
متن کاملTitle : Synchronization of Action Potentials During Low Magnesium Induced
28 The relationship between mono and poly-synaptic strength and action 29 potential synchronization was explored using a reduced external Mg model. 30 Single and dual whole-cell patch-clamp recordings were performed in hippocampal 31 cultures in three concentrations of external Mg. In decreased Mg medium, the 32 individual cells transitioned to spontaneous bursting behavior. In lowered Mg 33 me...
متن کاملSynchronization of action potentials during low-magnesium-induced bursting.
The relationship between mono- and polysynaptic strength and action potential synchronization was explored using a reduced external Mg(2+) model. Single and dual whole cell patch-clamp recordings were performed in hippocampal cultures in three concentrations of external Mg(2+). In decreased Mg(2+) medium, the individual cells transitioned to spontaneous bursting behavior. In lowered Mg(2+) medi...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1953
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1953.sp004934