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Experience-dependent potentiation and depression of synaptic strength has been proposed to subserve learning and memory by changing the gain of signals conveyed between neurons. Here we examine synaptic plasticity between individual neocortical layer-5 pyr ...
Glutamatergic neurotransmission is associated with release of arachidonic acid (AA) from membrane phospholipids of both neurons and astrocytes. Since free AA has been shown to enhance glutamate-mediated synaptic transmission, it can be postulated that glut ...
An unresolved paradox exists in auditory and electrosensory neural systems {Carr93,Heiligenberg91}: they encode behaviourally relevant signals in the range of a few microseconds with neurons that are at least one order of magnitude slower. We take the barn ...
The effects of noradrenaline (NA) on synaptic responses in layer II of the entorhinal cortex (EC) were studied in normal and spontaneously epileptic mutant mice tottering using intracellular recording in a slice preparation. Neither the membrane properties ...
Excitatory synaptic transmission is associated with changes in both extracellular and intracellular pH. Using mouse cortical neurons in primary cultures, we studied the sensitivity of glutamate-evoked release of 3H-arachidonic acid (3H-AA) to changes in ex ...
In recent years a vast array of experimental evidence has indicated the presence of functional receptors for neurotransmitters on nonneuronal cells, in particular astrocytes. The two neurotransmitters vasoactive intestinal peptide (VIP) and noradrenaline ( ...
The effects of acetylcholine (ACh) on excitatory postsynaptic potentials (EPSPs) evoked by stimulating Schaffer-commissural afferents and on ionophoretically applied L-glutamate ligands, were investigated in CA1 neurones of hippocampal slices using curr ...
VIP-containing cells in the neocortex are intrinsic neurons of the bipolar type, which release VIP through mechanisms that involve Ca2+ and lipoxygenase metabolites. VIP receptors are coupled to cAMP-generating systems that are amplified by various neurotr ...
The entorhinal cortex is a gateway to the hippocampus; it receives inputs from several cortical associative areas as well as subcortical areas. Since there is evidence showing that noradrenaline reduces the epileptic activity generated in the entorhinal co ...
The effects of 1-oleoyl-2-acetylglycerol (OAG), an activator of protein kinase C (PKC), on NMDA receptor-mediated responses were investigated in CA1 neurones of hippocampal slices using current- and voltage-clamp techniques. 2. Topical application of OA ...
