A rapid change in the membrane potential of an excitable cell, caused by stimulus-triggered, selective opening and closing of voltage-sensitive gates in sodium and potassium ion channels.

 The nerve impulse activated in a neuron that travels down the axon and causes neurotransmitters to be released into a synapse.

an electrical signal that travels along the axon, away from the cell body to the axon terminal where it triggers the release of neurotransmitters (Virtual Neurons, Connect the Neurons)

change in electrical potential (movement of sodium and potassium ions) that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals.

The firing on a neuron. Occurs when the charge inside the neuron becomes more positive than the charge outside.

An electric signal that travels along neurons; a continuously regenerated impulse that transfers information throughout the nervous system of organisms. © Nature Education

An all-or-none electrical event in an axon or muscle fiber in which the polarity of the membrane potential is rapidly reversed and reestablished. active immunity

The sequence of electrical changes occurring when a nerve cell membrane is exposed to a stimulus that exceeds its threshold. activational effects

the update in electric probability that circulates ahead in a cell during the course of the transmission of a nerve impulse or the shrinkage of a muscle. It is evident by an accelerated, transient dep [..]

A spontaneous self-propagating change in membrane potential that travels as a 'wave' along electrically excitable cell membranes found in neurons and muscle cells. Action potentials are triggered when the cell's membrane potential depolarizes (i.e. becomes more positive with respect to the internal side) beyond a threshold value of u [..]

Also called nerve impulse. The propagated electrical message of a neuron that travels along the axon to the presynaptic axon terminals. See Figures 3.6, 3.7.

Describes the change in electrical potential in a membrane associated with the movement of an impulse along a neuron.

Rapid, transient, all-or-none electrical activity that is propagated in the plasma membrane of excitable cells such as neurons and muscle cells. Action potentials, or nerve impulses, allow long-distan [..]

The action potential is an explosive release of charge between a nerve cell (neuron) and its surroundings. It moves along a neuron from a dendrite, through the soma and then the axon. It is part of th [..]

the electrochemical signal transmitted in the cell membrane of a neuron or muscle cell. Also called nerve impulse.

Abrupt changes in the Membrane Potential that sweep along the Cell Membrane of excitable Cells in response to excitation stimuli.

 This occurs when a neuron is activated and temporarily reverses the electrical state of its interior membrane from negative to positive. This electrical charge travels along the axon to the neuron� [..]

Electrical "all-or-none" impulse that transmits information within the nervous system.

An electrical charge that travels along the axon to the neuron's terminal, where it triggers the release of a neurotransmitter. This occurs when a neuron is activated and temporarily reverses the [..]

(also known as spike or impule) a rapid change in membrane voltage ("potential") from negative (-70 mV in nerve cells) to positive and then back to negative.  This causes an electrical current that proceeds down an axon.

<physiology> The sequential, electrochemical polarization and depolarisation that travels across the membrane of a nerve cell (neurone) in response to stimulation (touch, pain, cold, etc.) (09 Oct 1997)

An electrochemical change that occurs across the cell membrane of a neuron.

When a heart cell goes from a negative resting value to a positive value. Adrenergic A-Fib: