Results 321 to 330 of about 10,435,031 (361)

Inhibitory postsynaptic potentials of hypoglossal motoneurons of the cat

Experimental Neurology, 1972
Abstract The hypoglossal nerve of the cat contains some afferent fibers, but the role of these afferents in controlling hypoglossal motoneuron activity has not yet been analyzed. The effect of hypoglossal nerve stimulation on activity of hypoglossal motoneurons was investigated using microelectrode technique.
Toshifumi Morimoto, Yojiro Kawamura
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Block of glutamate transporters potentiates postsynaptic excitation

Neuron, 1994
We have studied the effects of blockers of glutamate transporters on excitatory synaptic transmission to determine whether transporters increase the clearance rate of transmitter from the synaptic cleft on the millisecond time scale. The transporter blockers Li+ and THA increased the amplitude, but not the decay time, of spontaneous miniature AMPA ...
Craig E. Jahr, Gang Tong
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Postsynaptic Potentials and Synaptic Integration

2004
Postsynaptic potentials (PSPs) can be divided into two broad classes on the basis of mechanisms. One class is based on the direct binding of a transmitter molecule(s) with a receptor-channel complex; these receptors are ionotropic. The other class of PSPs is based on the indirect effect of a transmitter molecule(s) binding with a G-protein-coupled ...
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Postsynaptic Mechanisms in the Potentiation of Synaptic Responses

1988
The membrane mechanisms underlying the postsynaptic potentiation of synaptic responses by muscarinic receptor activation were investigated in CA3 pyramidal neurons of hippocampus using single-electrode voltage-clamp. The application of muscarine inhibited both inward Ca2+ current and a slowly developing, persistent Ca2+-dependent outward current.
K. L. Zbicz, F. F. Weight
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Postsynaptic potentials in cat visual cortex

NeuroReport, 1992
During the investigation of visually evoked postsynaptic potentials (PSPs) of visual cortical neurons, we recorded cell activity under different levels of membrane potential. In some cases, however, dependence of these PSPs on the level of membrane polarization appears to be inconsistent with the conventional scheme. One disagreement was the reduction,
Otto D. Creutzfeldt, Maxim Volgushev, X. Pei, Trichur R. Vidyasagar   +3 more
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Tetanus-induced potentiation of inhibitory postsynaptic potentials in hippooampal CA1 neurons

Canadian Journal of Physiology and Pharmacology, 1995
In the present study, tetanus-induced potentiation of inhibitory postsynaptic potentials (IPSPs), previously described by our laboratory, was further investigated in guinea pig hippocampal CA1 neurons. Tetanic stimulation of the stratum radiatum induced a long-term potentiation of the excitatory postsynaptic potential and a potentiation of the γ ...
W Morishita, B R Sastry, Z. Xie, S. Yip
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Synaptic Transmission: Long-Lasting Potentiation by a Postsynaptic Mechanism

Science, 1976
Slow decreases of ionic conductance across neuronal cell membranes, which generate slow synaptic potentials, can increase the effectiveness of synaptic transmission. Slow conductance decreases of sufficient magnitude increase the amplitude of monosynaptic fast excitatory postsynaptic potentials in B cells of the bullfrog sympathetic ganglion.
Jesse A. Schulman, Forrest F. Weight
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THE GENERATION OF IMPULSES BY THE EXCITATORY POSTSYNAPTIC POTENTIAL AND THE ENDPLATE POTENTIAL

1964
Publisher Summary This chapter describes impulse generation by a single synchronous bombardment before treating the more complex phenomena resulting from repetitive synaptic activation. When the spike potentials generated by an excitatory postsynaptic potential (EPSP) are recorded at sufficient speed, they are seen to have an inflexion on the rising ...
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Postsynaptic potentiation and desensitization in frog neuromuscular junction

Canadian Journal of Physiology and Pharmacology, 1988
The fractional increase in ACh responses that occurs at the beginning of each train of iontophoretically applied ACh pulses has been examined at the frog neuromuscular junction at room temperature, in the presence of active cholinesterase, during desensitization produced by a rapid sequence (every 20 s) of short (5 Hz, 5 s) iontophoretic trains of ACh.
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Postsynaptic potentials of neurons of the cat auditory cortex

Neurophysiology, 1972
The electrical reactions of 294 neurons of the auditory cortex to a click were recorded in experiments on cats immobilized with tubocurarine (174 intra- and 120 extracellularly). The value of the membrane potential varied from 30 to 70 mV with intracellular leads.
F. N. Serkov, E. Sh. Yanovskii
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