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Variability, compensation and homeostasis in neuron and network function.

Eve Marder1, Jean-Marc Goaillard

  • 1Volen Center and Biology Department, MS 013 Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA. marder@brandeis.edu

Nature Reviews. Neuroscience
|June 23, 2006
PubMed
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Neurons require homeostatic mechanisms for stable function due to long lifespans. This study explores how precise tuning of neuronal properties ensures network performance and allows for varied solutions to produce consistent behavior.

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • Neurons must maintain stable function throughout an animal's lifespan, despite the relatively short half-lives of proteins controlling excitability and synaptic transmission.
  • Homeostatic mechanisms are essential for ensuring consistent neuronal and network function over extended periods.

Purpose of the Study:

  • To investigate the necessary precision of synaptic and intrinsic neuronal properties for functional network operation.
  • To explore the extent to which compensatory mechanisms enable multiple strategies for achieving similar network behaviors.

Main Methods:

  • Review of theoretical and experimental studies.
  • Analysis of data from both invertebrate and vertebrate models.
  • Examination of synaptic and intrinsic current regulation.

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Main Results:

  • Neuronal and network function require tightly regulated synaptic and intrinsic properties.
  • Compensatory mechanisms can lead to diverse solutions for maintaining network performance.
  • Understanding the precision of these currents is key to comprehending functional neuronal circuits.

Conclusions:

  • Homeostatic regulation is critical for long-term neuronal stability.
  • The brain exhibits flexibility in achieving functional network states.
  • Further research into the precise tuning of neuronal properties is needed to fully understand neural circuit operation.