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  1. Neuron action potentials: The creation of a brain signal

    Action potentials (those electrical impulses that send signals around your body) are nothing more than a temporary shift (from negative to positive) in the neuron’s membrane potential caused …

  2. Depolarization, hyperpolarization & neuron action potentials …

    In neurons, the cell enters a state of hyperpolarization immediately following the generation of an action potential. While hyperpolarized, the neuron is in a refractory period that lasts roughly 2 …

  3. The synapse (article) | Human biology | Khan Academy

    Learn about synapses, the connections between neurons in the nervous system, and how they transmit signals efficiently on Khan Academy.

  4. Overview of neuron structure and function - Khan Academy

    A single neuron can’t do very much by itself, and nervous system function depends on groups of neurons that work together. Individual neurons connect to other neurons to stimulate or inhibit …

  5. Signal propagation: The movement of signals between neurons

    Each vesicle packet released from the pre-synaptic neuron will contain a set amount of neurotransmitters, which will then bind to some of the receptors on the post-synaptic cell. If the …

  6. Neurotransmitters and receptors (article) | Khan Academy

    When neurotransmitters bind to receptors, those receptors become activated. Activated receptors would open or close ion channels, which would affect the membrane potential of the …

  7. Neuron action potential mechanism (video) | Khan Academy

    The reason for this part of the action potential, which is called the falling phase, is because potassium starts to exit the neuron and it does so through a couple of types of channels. The …

  8. Neuromuscular junction, motor end-plate (video) | Khan Academy

    How do neurons talk directly to muscle cells? Learn about how a neuronal message is translated into a muscular action at the neuromuscular junction. By Raja Narayan.

  9. The synapse (article) | Human biology | Khan Academy

    At the synapse, the firing of an action potential in one neuron—the presynaptic, or sending, neuron—causes the transmission of a signal to another neuron—the postsynaptic, or …

  10. Potencjał czynnościowy neuronu (film) | Khan Academy

    Potencjał spoczynkowy neuronu Potencjał spoczynkowy neuronu - mechanizm działania Neuron graded potential description Neuron graded potential mechanism Potencjał czynnościowy …