introduction: over the last decade, exposure to electromagnetic waves due to base station antennas has increased. this study was planned to evaluate the effects of different electrical field strengths with 950 mhz waves of the gsm mobile phone system on the excitatory postsynaptic potentiation (epsp) slope of the dentate gyrus long-term potentiation (ltp). material and methods: twenty four naiv...

Introduction: Over the last decade, exposure to electromagnetic waves due to base station antennas has increased. This study was planned to evaluate the effects of different electrical field strengths with 950 MHz waves of the GSM mobile phone system on the excitatory postsynaptic potentiation (EPSP) slope of the dentate gyrus long-term potentiation (LTP). Material and Methods: Twenty four naiv...

Background: Evidences show that parental morphine addiction impairs CNS development, learning and memory in offsprings. Since long term potentiation (LTP) is a cellular mechanism of learning and memory, in this study the effect of parental morphine addiction on LTP induction in dentate gyrus by high frequency stimulation of perforant path was assessed. Materials and methods: In this experiment...

The effects of group I metabotropic glutamate (mGlu) receptors on excitatory transmission in the rat dorsal horn, but mostly substantia gelatinosa, neurons were investigated using conventional intracellular recording in slices. The broad spectrum mGlu receptor agonist (1S,3R)-1-aminocyclopentane-1,3-dicarboxylic acid (1S, 3R-ACPD), the group I mGlu receptor selective agonist (S)-3, 5-dihydroxyp...

The impact of pentylenetetrazol-induced kindling on the effectiveness of theta pattern primed-bursts (PBs) for the induction of long-term potentiation (LTP) of field excitatory postsynaptic potentials (fEPSP) and population spikes (PS) were investigated in hippocampal CA1 of pentylenetetrazol-kindled rats in vivo. The results showed that shortly after kindling, control animals had normal LTP of...

Sensory cortical neurons display substantial receptive field dynamics during and after persistent sensory drive. Because a cell's response properties are determined by the inputs it receives, receptive field dynamics are likely to involve changes in the relative efficacy of different inputs to the cell. To test this hypothesis, we have investigated if brief repetitive stimulus drive in vitro al...

The impact of pentylenetetrazol-induced kindling on the effectiveness of theta pattern primed-bursts (PBs) for the induction of long-term potentiation (LTP) of field excitatory postsynaptic potentials (fEPSP) and population spikes (PS) were investigated in hippocampal CA1 of pentylenetetrazol-kindled rats in vivo. The results showed that shortly after kindling, control animals had normal LTP of...

Coincident pre- and postsynaptic activity generates long-term potentiation (LTP), a possible cellular model of learning and memory. LTP has two components: (1) an increase in the excitatory postsynaptic potential (EPSP), and (2) an increase in the ability of the EPSP to generate a spike (E-S coupling of LTP). We have used pharmacological and genetic approaches to address the molecular nature of...

Long-term potentiation (LTP) is a long-lasting enhancement of synaptic transmission that can be induced by brief repetitive stimulation of excitatory pathways in the hippocampus. One of the most controversial points is whether the process underlying the enhanced synaptic transmission occurs pre- or postsynaptically. To examine this question, we have taken advantage of the novel physiological pr...

The purpose of the present study was to examine whether cAMP-dependent mechanisms regulated excitatory synaptic transmission in the neostriatum. A brain slice preparation was utilized for intracellular recordings of the excitatory postsynaptic potentials (EPSPs) evoked by electrical stimulation. Bath application of forskolin, an activator of adenylate cyclase, enhanced the EPSP amplitude and du...