Unitary EPSPs were evoked in CA1 pyramidal neurons by activation of single CA3 pyramidal neurons. Seventy-one EPSPs were recorded. The peak amplitudes of these EPSPs ranged from 30 to 665 microV with a mean of 131 microV. Rise times and half-widths were measured, the means +/- SD being 3.9 +/- 1.8 and 19.5 +/- 8.0 msec, respectively. The time courses of these EPSPs were consistent with a brief ...

Vasoactive intestinal peptide (VIP) immunoreactive secretomotor neurons in the submucous plexus are involved in mediating bacterial toxin-induced hypersecretion leading to diarrhoea. VIP neurons become hyperexcitable after the mucosa is exposed to cholera toxin, which suggests that the manipulation of the excitability of these neurons may be therapeutic. This study used standard intracellular r...

The spontaneous occurrence of resistance to the herbicide glyphosate in weed species has been an extremely infrequent event, despite over 20 years of extensive use. Recently, a glyphosate-resistant biotype of goosegrass (Eleusine indica) was identified in Malaysia exhibiting an LD(50) value approximately 2- to 4-fold greater than the sensitive biotype collected from the same region. A compariso...

Transgenic glyphosate-tolerant plants overproducing EPSPS (5-enolpyruvylshikimate-3-phosphate synthase) may exhibit enhanced fitness in glyphosate-free environments. If so, introgression of transgenes overexpressing EPSPS into wild relative species may lead to increased competitiveness of crop-wild hybrids, resulting in unpredicted environmental impact. Assessing fitness effects of transgenes o...

We studied the spread of excitatory postsynaptic potentials (EPSPs) through electrical synapses in Retzius neurones of the leech Haementeria officinalis. The pair of Retzius neurones in each ganglion is coupled by a non-rectifying electrical synapse. Both neurones displayed synchronous EPSPs of varying amplitudes and rise times. The kinetics of synchronous EPSPs was similar in 79 % of the EPSP ...

Hydrogen sulfide (H2S) plays important roles in the enteric system in the wall of the gastrointestinal tract. There have been no studies on whether H2S is endogenously generated in peripheral sympathetic ganglia and, if so, its effect on synaptic transmission. In this study, we examined the effect of H2S on cholinergic excitatory fast synaptic transmission in the mouse superior mesenteric gangl...

Synaptic inputs of rubrospinal (RN) neurons from the cerebral cortex, pretectal area (PRT), and medial lemniscus (ML) were investigated electrophysiologically in the cat. Stimulation of the ipsilateral parietal association cortex (PASC) and secondary sensory area (SII) produced slow-rising about 3 msec rise time monosynaptic EPSPs which were, in some cases, followed by hyperpolarizations, simil...

the alternative use of non-selective herbicides in different years will reduce the possibility of weeds resistance to herbicide by avoiding the crops constant exposure to herbicide selection pressure. the photoperiod-sensitive genic male sterile (pgms) rice with herbicide resistance will be convenient to the mechanization of hybrid seed production and weed control. in order to develop double he...

To reduce the size of the biosignal data is important because a huge amount of data is made by various experiments. In the paper, we efficiently compress the excitatory postsynaptic potentials (EPSPs) which is one of the biosignal types. To the best of authors' knowledge, EPSPs compression has not been studied yet. The EPSP signal has a feature that the adjacent signals in single excitatory pos...