Sentences with phrase «of action potentials»

In the absence of basal P2X activation, the gustatory afferents may simply be too hyperpolarized to permit generation of action potentials by other transmitters and modulators.

«So we tested the signaling between different neurons in fragile X mice, and indeed found there was abnormally high firing of action potentials — the signals between neurons — and also abnormally high synchrony; that is, too many neurons fired together.

Oligodendrocytes, the cells that are known to produce the myelin sheaths which enable saltatory conduction of action potentials along the myelinated axons, are modulators of signal transmission along neuronal connections (axons) and also promote neuronal survival by providing metabolic support.

The researchers stimulated the presynaptic neurons with a rapid series of action potentials over a short period of time.

«The plant can judge, by simply counting the number of action potentials spreading over the trap, whether useless dead material has landed inside it or if useful animal prey has been caught,» says Sönke Scherzer, an electrophysiologist at the University of Würzburg in Germany, and one of the study's co-authors.

Neurons in multiple brain regions fire trains of action potentials anticipating specific movements, but this «preparatory activity» has not been systematically compared across behavioral tasks.

Neurons in frontal cortex fire trains of action potentials anticipating specific movements, often seconds before the movement.

He applied my new understanding of PD to increase the signal to noise of optical SHG recording of action potentials.

«Such losses are particularly critical in the auditory system, because they reduce the temporal precision of signal transmission — and the quality of our perception of the acoustic environment is primarily dependent on rates of action potential generation and precise neural computation of their temporal sequences.»

The presynaptic neuron also releases neurotransmitter in the absence of action potentials, in a process called spontaneous release.

When the presynaptic neuron registers an influx of calcium ions, carrying the electrical surge of the action potential, vesicles that store neurotransmitters fuse to the cell's membrane and spill their contents outside the cell, where they bind to receptors on the postsynaptic neuron.

The - subunits «fine - tune» the activity of the channel, so that the initiation, frequency and duration of the action potential can be appropriately regulated.

«Chandelier cells are the final gatekeeper of the action potential,» said Dr. Taniguchi.

By comparing hippocampal and cortical neurons in mono - culture (with other cells of the same type) and in co-culture (both cell types deposited within one device), the research showed that some features from hippocampal cells, like the percentage of action potential spikes found in bursts, were significantly higher when cultured together with cortical cells.

If correct, this would allow a more efficient initiation of the action potential.»

The heat was enough to activate TRPV1, opening the channels to a flood of calcium ions and triggering the kind of action potentials (electrical signaling) that guides nerve cell function.

The UAB researchers, led by corresponding author John Hablitz, Ph.D., professor and interim chair of Neurobiology, UAB School of Medicine, found that treatments that inhibit DNA methylation in cultured rat neocortical neurons caused an increase in the IME of those neurons, as shown by an increased frequency of a series of action potentials when the neurons were stimulated.

Voltage - dependent potassium ion (K +) channels (Kv channels) conduct K + ions across the cell membrane in response to changes in the membrane voltage, thereby regulating neuronal excitability by modulating the shape and frequency of action potentials.

The work combines remote control of action potential firing and synaptic signaling combined with imaging of activity with genetically encoded calcium and voltage sensors and electrophysiology.

Abstract Any type of neurons can be easily identified based on its electrophysiological activity, such as its pattern of spontaneous activity, the shape of its action potential, its dendritic integration, etc..

«We found that, during periods of recurrent network activity, cortical pyramidal cells in vivo and in vitro receive strong barrages of both excitatory and inhibitory postsynaptic potentials, with the inhibitory potentials synchronously controlling the timing of action potentials.»

To this aim we have screened our electrophysiological recordings of the magnocellular neurons, previously obtained from acute slices, with an analysis of autocorrelation of action potentials to detect a rhythmic drive as we recently did for organotypic cultures.

Among these systems, hypothalamo - neurohypophyseal magnocellular neurons have been early - considered models, as they typically display an electrical activity consisting of bursts of action potentials that is optimal for the release of boluses of the neurohormones oxytocin and vasopressin.

Using the data they collected, Andrew Schwartz and a team of researchers at the University of Pittsburgh were able to translate patterns of action potentials into specific motions.

On the other hand, potassium losses in the watery stool can have serious consequences since potassium is one of two principal electrolytes needed in the propagation of an action potential across the cell membrane.

«The number of action potentials informs [the plant] about the size and nutrient content of the struggling prey,» Hedrich said.

A sound enters the ear and triggers a stream of action potentials, which nudge the waves of electrical activity coursing through the cortex into a particular chaotic pattern, or attractor.

VDACs are present in all neurons, especially the sodium and potassium channels along the axons, which play a fundamental role in the generation of action potential and signaling between neurons.