Results 311 to 320 of about 10,942,539 (365)
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Vestibular-evoked postsynaptic potentials in Deiters neurones
Experimental Brain Research, 1969Stimulation of the vestibular nerve induced EPSPs monosynaptically in 29% of cat's Deiters neurones sampled on the ipsilateral side. These EPSPs started with latencies of 0.6–1.0 msec, rose sharply with a summit time of 0.5 msec and decayed exponentially with a time constant of 0.9–1.7 msec. Then amplitudes were graded finely according to the intensity
M, Ito, T, Hongo, Y, Okada
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Self-modeling structure of evoked postsynaptic potentials
Synapse, 2006With the simplicity of the synaptic structure and physiology at neuromuscular junctions (NMJs) of crayfish and the given transmitter being released in quantal packets, a detailed assessment in the fundamental processes of chemical synaptic transmission is possible. Since the quantal event is the basic element of transmission, we consider an approach to
Kert, Viele +2 more
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Pentobarbital: Selective Depression of Excitatory Postsynaptic Potentials
Science, 1973The effects of pentobarbital (Nembutal) on synaptic transmission and postsynaptic potentials were studied by the use of several invertebrate preparations. Pentobarbital selectively and reversibly depressed both excitatory postsynaptic potentials and sodium-dependent postsynaptic responses to putative excitatory transmitters without affecting either ...
J L, Barker, H, Gainer
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Postsynaptic Membrane Fusion and Long-Term Potentiation
Science, 1998The possibility that membrane fusion events in the postsynaptic cell may be required for the change in synaptic strength resulting from long-term potentiation (LTP) was examined. Introducing substances into the postsynaptic cell that block membrane fusion at a number of different steps reduced LTP.
P M, Lledo +4 more
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Stretch-evoked excitatory postsynaptic potentials in motoneurons
Brain Research, 1971Abstract The profile of excitatory postsynaptic potential (EPSP) produced on triceps surae motoneurons by 5 msec duration triangular wave stretch of de-efferented medial gastrocnemius (MG) and soleus (S) muscles was observed on anesthetized, spinalized cats.
D G, Stuart, W D, Willis, R M, Reinking
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Block of glutamate transporters potentiates postsynaptic excitation
Neuron, 1994We 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 ...
G, Tong, C E, Jahr
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Postsynaptic potentials in cat visual cortex
NeuroReport, 1992During 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,
Volgushev, M. +3 more
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Postsynaptic Mechanisms Involved in Long-Term Potentiation
1990Long-term potentiation (LTP) is a persistent enhancement of synaptic transmission observed at excitatory synapses in the mammalian hippocampus (Bliss and Lomo, 1973). This phenomenon is one of the most striking examples of synaptic plasticity in the vertebrate brain, and has been intensively studied as a model for learning and memory.
J A, Kauer +3 more
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Postsynaptic Induction of BDNF-Mediated Long-Term Potentiation
Science, 2002Brain-derived neurotrophic factor (BDNF) and other neurotrophins are critically involved in long-term potentiation (LTP). Previous reports point to a presynaptic site of neurotrophin action. By imaging dentate granule cells in mouse hippocampal slices, we identified BDNF-evoked Ca 2+ transients in dendrites and ...
Yury, Kovalchuk +3 more
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Prolongation of hippocampal inhibitory postsynaptic potentials by barbiturates
Nature, 1975IT is well documented that barbiturates dramatically prolong presynaptic inhibition1–4. Their effect on postsynaptic inhibition is less clear, although the available evidence suggests that a similar enhancement may occur at some sites5–7. Since the inhibitory postsynaptic potentials (i.p.s.p.s) in hippocampal neurones are unusually large and the ...
R A, Nicoll +3 more
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