Results 271 to 280 of about 108,206 (318)

Inhibitory Postsynaptic Potentials in Grasshopper Muscle

Science, 1964
Hyperpolarizing inhibitory postsynaptic potentials have been discovered in fibers of the "jumping" muscle of the grasshopper. These potentials attenuate the depolarizing excitatory postsynaptic responses. They are enhanced during depolarization of the muscle fiber with applied current and are diminished and then reversed during hyperpolarization.
P N, USHERWOOD, H, GRUNDFEST
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Prolongation of hippocampal inhibitory postsynaptic potentials by barbiturates

Nature, 1975
IT 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, J C, Eccles, T, Oshima, F, Rubia   +3 more
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Monosynaptic inhibitory postsynaptic potentials of cortical neurons

Neurophysiology, 1976
Monopolar intracortical stimulation of the auditory cortex was carried out in cats immobilized with D-tubocurarine. A macroelectrode (tip diameter 100 µ) or a microelectrode (tip diameter 10–15 µ) was used for stimulation. In both cases, besides excitatory responses, primary IPSPs with latent periods of 0.4–1.2 and 1.4–6.0 msec were recorded in ...
F. N. Serkov, E. Sh. Yanovskii, A. N. Tal'nov   +2 more
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Interneuronal barrages and ripple superposed on inhibitory postsynaptic potentials

Experientia, 1967
L'activite electrique des neurones du noyau thalamique ventro-lateral est etudiee ici chez des chats anesthesies au nembutal et immobilises avec du flaxedil au moyen d'un enregistrement intracellulaire. Nous avons observe que l'enregistrement de certains neurones montre que le potentiel nomme inhibiteur postsynaptique (IPSP) est accompagne de la ...
L A, Marco, T S, Brown, M E, Rouse
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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.
T, Morimoto, Y, Kawamura
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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 ...
Z, Xie, S, Yip, W, Morishita, B R, Sastry   +3 more
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Valproate enhances inhibitory postsynaptic potentials in hippocampal neurons in vitro

Brain Research, 1987
Effects of sodium valproate (0.5-10 mM) on hippocampal cells (CA3 pyramidal cells and granule cells) of the guinea pig in vitro were studied by intra- and extracellular recording. Inhibitory postsynaptic potentials were markedly and reversibly augmented. Their shunting action as well as duration increased by more than 150%.
U, Preisendörfer, M L, Zeise, M R, Klee
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Phaclofen inhibition of the slow inhibitory postsynaptic potential in hippocampal slice cultures: A possible role for the GABAB-mediated inhibitory postsynaptic potential

Neuroscience, 1990
The GABAA antagonist bicuculline methiodide and the GABAB antagonist phaclofen were used to examine the function of the fast inhibitory postsynaptic potential and slow inhibitory postsynaptic potential, in hippocampal slice cultures in the rat. These cultures form easily-visualized monolayers of nerve cells which maintain the structure and synaptic ...
A T, Malouf, C A, Robbins, P A, Schwartzkroin   +2 more
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Nonadrenergic inhibitory postsynaptic potentials of gastric smooth muscle cells

Neurophysiology, 1973
Single intramural stimulation of the atropinized muscle strip of the guinea pig stomach by square pulses was accompanied by the formation of inhibitory postsynaptic potentials (IPSPs) in the muscle cells and by relaxation of the strip. The mean latent period of the IPSPs was 150±15 msec, and the time for its amplitude to rise and fall was 150±15 and ...
E. S. Atanasova, I. A. Vladimirova, M. F. Shuba   +2 more
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5-Hydroxytryptamine mediates inhibitory postsynaptic potentials in rat dorsal raphe neurons

Neuroscience Letters, 1985
In rat dorsal raphe neurons, focal electrical stimulation elicited a slow inhibitory postsynaptic potential (IPSP) associated with increased membrane conductance. On the basis of data in the literature this IPSP is presumably caused by a recurrent inhibitory circuit. 5-Hydroxytryptamine (5-HT) application caused a hyperpolarization of the cell membrane,
M, Yoshimura, H, Higashi
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