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Neuronal Communication01:28

Neuronal Communication

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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...
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Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
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Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
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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.
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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.
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Related Experiment Video

Updated: Apr 20, 2026

Perspectives on Neuroscience
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Neurons and behavior: ex uno, plures.

Thierry Louis1, Seth M Tomchik1

  • 1Department of Neuroscience, The Scripps Research Institute, Scripps Florida, 130 Scripps Way #3C1, Jupiter, FL 33458, USA.

Cell
|November 24, 2014
PubMed
Summary

A single interneuron can control complex behaviors by releasing neurotransmitters that activate distinct postsynaptic receptors. This mechanism allows a small neural circuit to generate a wide range of functional responses.

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Cellular Neuroscience

Background:

  • Neural circuits employ diverse mechanisms to generate complex behaviors.
  • Interneurons play crucial roles in modulating circuit activity and information processing.
  • Understanding how single neurons control distinct outputs is key to deciphering neural computation.

Purpose of the Study:

  • To investigate how a single interneuron can regulate both analog- and digital-like behaviors.
  • To elucidate the role of postsynaptic receptor properties in mediating distinct neuronal responses.
  • To demonstrate the capacity of a small neuronal population to drive diverse functional outcomes.

Main Methods:

  • Utilized electrophysiological recordings to analyze neuronal activity.

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  • Employed computational modeling to simulate circuit dynamics.
  • Performed genetic manipulations to target specific neuronal populations and receptors.

    • Main Results:

    • A single interneuron was shown to control distinct postsynaptic neurons.
    • These postsynaptic neurons exhibited differential responses based on receptor biophysical properties.
    • This interneuron-driven signaling regulated both analog and digital-like behavioral outputs.

    Conclusions:

    • A single interneuron can orchestrate complex behaviors through differential modulation of postsynaptic targets.
    • The biophysical properties of postsynaptic receptors are critical for translating a single neurotransmitter signal into distinct functional outcomes.
    • Small neuronal ensembles can generate a broad repertoire of behaviors via precise synaptic control.