Stomatogastric Ganglion
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Dissecação dinâmica de condutâncias iônicas em tempo real / Dynamic dissection of ionic conductances in real time
Investigamos o papel de condutâncias iônicas lentas na transmissão/codificação de informação entre neurônios que disparam em rajadas ou bursts. Para isso, desenvolvemos um protocolo experimental no qual a interação em tempo real entre computador e neurônio biológico permite isolar o efeito da dinâmica de um determinado tipo de canal iônico e es
Publicado em: 2011
-
2. Modelagem estocástica de neurônios e sua interação em tempo real com neurônios biológicos / Stochastic neural modelling and interfacing neurons and models in real-time
We developed a mathematical model of the electrical activity of a motor neuron from the stomatogastric ganglion of crustaceans. It was inspired on a previous existing deterministic model which is considered as electrophysiologically plausible in the recent literature. However, this deterministic model were not able to reproduce the irregular bursting behavio
Publicado em: 2008
-
3. Graded synaptic transmission between spiking neurons.
Graded synaptic transmission occurs between spiking neurons of the lobster stomatogastric ganglion. In addition to eliciting spike-evoked inhibitory potentials in postsynaptic cells, these neurons also release functionally significant amounts of transmitter below the threshold for action potentials. The spikeless postsynaptic potentials grade in amplitude wi
-
4. Spatially and temporally resolved calcium concentration changes in oscillating neurons of crab stomatogastric ganglion.
Calcium concentration changes during oscillations of the membrane potential of crab (Cancer irroratus or Cancer borealis) stomatogastric neurons were monitored at many positions by using the calcium indicator dye arsenazo III and a photodiode array. Data analysis algorithms using signal averaging techniques were developed to improve the time resolution of th
-
5. Regional distribution of calcium influx into bursting neurons detected with arsenazo III.
Absorbance changes of the metallochromic indicator arsenazo III were used in conjunction with an array of 100 photodiodes to measure changes in intracellular calcium concentration at many positions simultaneously in identified neurons of the crab stomatogastric ganglion. When stimulated with intrasomatically injected current, several of these neurons showed
-
6. Drosophila goosecoid participates in neural development but not in body axis formation.
In vertebrate embryos, the homeobox gene goosecoid (gsc) is expressed in the gastrula organizer region and in later arising embryonic tissues including the foregut anlage. Ectopic expression and loss-of-function studies have demonstrated that Xenopus gsc elicits a dorsalizing activity that contributes to body axis formation. Here we report that the gsc gene
-
7. Predictions of Phase-Locking in Excitatory Hybrid Networks: Excitation Does Not Promote Phase-Locking in Pattern-Generating Networks as Reliably as Inhibition
Phase-locked activity is thought to underlie many high-level functions of the nervous system, the simplest of which are produced by central pattern generators (CPGs). It is not known whether we can define a theoretical framework that is sufficiently general to predict phase-locking in actual biological CPGs, nor is it known why the CPGs that have been charac
American Physiological Society.
-
8. Compartmental models of electrotonic structure and synaptic integration in an identified neurone.
A three-compartment model of the electrotonic structure of an identified motoneurone, the median gastric (m.g.) neurone of the stomatogastric ganglion of the spiny lobster (Panulirus interruptus) was constructed, based on the passive response of the cell to a step of injected current. While its structure is only remotely related to that of the cell, the mode