About 369,000 results
Open links in new tab
  1. What Is Action Potential? - Simply Psychology

    Jun 17, 2025 · An action potential is an electrical nerve impulse that travels along a neuron's axon. It's a transient, all-or-nothing electrical current that is conducted down the axon when …

  2. Action potential - Wikipedia

    An action potential (also known as a nerve impulse or " spike " when in a neuron) is a series of quick changes in voltage across a cell membrane. An action potential occurs when the …

  3. Action potential: Definition, Steps, Phases | Kenhub

    Nov 3, 2023 · An action potential is caused by either threshold or suprathreshold stimuli upon a neuron. It consists of three phases: depolarization, overshoot, and repolarization.

  4. Action potential | Definition, Steps, & Facts | Britannica

    Dec 18, 2025 · Action potential, the brief (about one-thousandth of a second) reversal of electric polarization of the membrane of a nerve cell (neuron) or muscle cell. In the neuron an action …

  5. What Is a Neuron Action Potential and How Does It Work?

    Jul 29, 2025 · Neurons are the fundamental units of the nervous system, specialized cells for communication. These cells transmit information through rapid, temporary shifts in their …

  6. Action potentials and synapses - Queensland Brain Institute

    Neurons communicate with each other via electrical events called ‘action potentials’ and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes …

  7. 12.5 The Action Potential – Anatomy & Physiology 2e

    A speaker is powered by the signals recorded from a neuron and it “pops” each time the neuron fires an action potential. These action potentials are firing so fast that it sounds like static on …

  8. How a Neuron Fires: The Action Potential Explained

    Nov 19, 2025 · The neuron is the fundamental cell of the nervous system, responsible for transmitting information throughout the body. This communication relies on a rapid, …

  9. Action Potentials – Human Physiology - University of Guelph

    Communicate the difference between an unmyelinated and myelinated neuron. An action potential is the foundation of neuronal communication. It is an electrical signal that nervous …

  10. Action Potentials – Foundations of Neuroscience

    The action potential is a rapid and temporary change in the electrical potential of a neuron’s membrane, critical for transmitting signals along axons. This chapter explores its phases, …