関連する実験動画

Updated: Aug 10, 2026

Dopamine Release at Individual Presynaptic Terminals Visualized with FFNs
09:37

Dopamine Release at Individual Presynaptic Terminals Visualized with FFNs

Published on: August 31, 2009

胚性ニューロンの成長から発信器が自発的に放出される

S H Young, M M Poo

    Nature
    |October 13, 1983
    PubMed
    まとめ

    神経の成長コーンは,シナプスを形成する前に,神経伝達物質であるアセチルコリン (ACh) を自発的に放出します. この発見は,AChの放出がニューライトの拡張と成長コンの環境との相互作用に不可欠であることを示唆しています.

    さらに関連する動画

    Simultaneous Pre- and Post-synaptic Electrophysiological Recording from Xenopus Nerve-muscle Co-cultures08:13

    Simultaneous Pre- and Post-synaptic Electrophysiological Recording from Xenopus Nerve-muscle Co-cultures

    Published on: March 11, 2013

    Isolation and Culture of Dissociated Sensory Neurons From Chick Embryos11:16

    Isolation and Culture of Dissociated Sensory Neurons From Chick Embryos

    Published on: September 24, 2014

    関連する概念動画

    Synaptic Signaling01:12

    Synaptic Signaling

    Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
    The Synapse02:47

    The Synapse

    Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
    Synaptic Signaling01:09

    Synaptic Signaling

    Neurons communicate at synapses, or junctions, to excite or inhibit the activity of other neurons or target cells, such as muscles. Synapses may be chemical or electrical.
    Most synapses are chemical, meaning an electrical impulse or action potential spurs the release of chemical messengers called neurotransmitters. The neuron sending the signal is called the presynaptic neuron, and the neuron receiving the signal is the postsynaptic neuron.
    The presynaptic neuron fires an action potential that...
    Excitatory and Inhibitory Effects of Neurotransmitters01:29

    Excitatory and Inhibitory Effects of Neurotransmitters

    When an action potential reaches the presynaptic axon terminal, it releases neurotransmitters from the neuron into the synaptic cleft at a chemical synapse. The released neurotransmitter can be excitatory or inhibitory. The critical criteria commonly used to determine whether a molecule is a neurotransmitter at a chemical synapse are the molecule's presence in the presynaptic neuron. Second, its release is in response to strong presynaptic depolarization. And lastly, the presence of specific...
    Neurogenesis and Regeneration of Nervous Tissue01:15

    Neurogenesis and Regeneration of Nervous Tissue

    In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
    Neuronal Communication01:28

    Neuronal Communication

    Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...