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Action potential - Wikipedia
In neurons, action potentials play a central role in cell–cell communication by providing for—or with regard to saltatory conduction, assisting—the propagation of signals along the neuron's …
The action potential in mammalian central neurons - Nature
One recognizable phenotype is that of fast-spiking neurons, which are capable of firing steadily at high frequencies and have narrow action potentials. This phenotype is typical of many...
Action potential: Definition, Steps, Phases - Kenhub
2023年11月3日 · An action potential is caused by either threshold or suprathreshold stimuli upon a neuron. It consists of three phases: depolarization, overshoot, and repolarization. An action …
The origin of extracellular fields and currents — EEG, ECoG, …
2012年5月18日 · Synchronous spiking of nearby neurons is the main source of the high-frequency components of the local field. There is a discernable relationship between the temporal …
Action Potentials (Spikes) - University of St Andrews
Spikes are the mechanism that allow neurons to pass information over relatively long distances within themselves. Thus a mechanosensory neuron at the tip of a flipper in a blue whale has to …
Positive and biphasic extracellular waveforms correspond to return ...
2023年9月18日 · During an action potential, the recorded waveforms depend on neuronal morphology, spike initiation site, and the relative position of the electrodes and the subcellular …
Activity-dependent ectopic action potentials in regular-spiking …
2023年11月9日 · Ectopic action potentials (EAPs) were initially observed in pathological conditions including seizures and nerve injury. Several studies have described regular-spiking …
Action potential initiation and propagation: upstream influences …
In neurons, voltage-gated sodium conductances play an essential role in action potential initiation and propagation (Hodgkin and Huxley, 1952). Voltage-gated sodium channels activate and …
Action potentials and synapses - Queensland Brain Institute ...
Neuroscientists often refer to action potentials as ‘spikes’, or say a neuron has ‘fired a spike’ or ‘spiked’. The term is a reference to the shape of an action potential as recorded using …
High-speed interferometric imaging reveals dynamics of neuronal ... - PNAS
2020年4月27日 · Here we report full-field imaging of cellular deformations accompanying the action potential in mammalian neuron somas (−1.8 to 1.4 nm) and neurites (−0.7 to 0.9 nm), …