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Related Concept Videos

Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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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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Motor Units

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Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging
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Targeted Labeling of Neurons in a Specific Functional Micro-domain of the Neocortex by Combining Intrinsic Signal and Two-photon Imaging

Published on: December 12, 2012

Functional maps within a single neuron.

Rishikesh Narayanan1, Daniel Johnston

  • 1Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India. rishi@mbu.iisc.ernet.in

Journal of Neurophysiology
|August 31, 2012
PubMed
Summary
This summary is machine-generated.

This review proposes viewing dendritic ion channels as functional maps within neurons. This perspective explains how dendrites efficiently process sensory input and maintain stability during neural coding and learning.

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Cellular Neuroscience

Background:

  • Dendritic ion channels are present and plastic, but their specific roles in neuronal information processing remain debated.
  • There is no consensus on the diversity and expression patterns of ion channels in neuronal dendrites.

Purpose of the Study:

  • To propose a novel framework for understanding dendritic information processing.
  • To postulate that intraneuronal functional maps in dendrites are formed to efficiently encode inputs and maintain homeostasis.

Main Methods:

  • Drawing analogies from the sensory map literature.
  • Relating intraneuronal map physiology to existing research on sensory maps.
  • Presenting a conceptual framework for analyzing single-neuron information encoding.

Main Results:

  • A new perspective is offered where functional gradients in neurons are viewed as maps.
  • The formation of these intraneuronal maps is postulated to serve efficient input encoding and homeostasis.
  • The sensory map metaphor provides testable research directions for intraneuronal maps.

Conclusions:

  • This framework offers a thesis for the expression and alteration of dendritic ion channels.
  • Active dendrites can be linked to neural coding, learning theory, and homeostasis.
  • Viewing dendrites as functional maps provides a fresh conceptual approach to neuronal information processing.