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Recurrent network activity drives striatal synaptogenesis.

Yevgenia Kozorovitskiy1, Arpiar Saunders, Caroline A Johnson

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Early neural activity in the developing striatum shapes basal ganglia wiring. The balance of inhibitory pathways regulates excitatory input, highlighting positive feedback

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Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Systems Neuroscience

Background:

  • Neural activity is crucial for postnatal brain wiring, particularly in sensory systems.
  • The role of early activity in basal ganglia development is poorly understood.
  • Basal ganglia are vital for motor control and learning but lack direct sensory input and clear topographic organization.

Purpose of the Study:

  • To investigate the role of early neuronal activity in the development of the basal ganglia.
  • To determine how activity balance in the striatum influences basal ganglia wiring.

Main Methods:

  • Utilized transgenic mice and viral gene transfer techniques.
  • Modulated neurotransmitter release and neuronal activity in the developing striatum in vivo.

Main Results:

  • The balance between two inhibitory pathways in the striatum regulates excitatory innervation of the basal ganglia.
  • Activity propagation through multi-stage networks is key to basal ganglia wiring.

Conclusions:

  • Early activity in the striatum is critical for basal ganglia development.
  • Positive feedback mechanisms play a significant role in driving the maturation of basal ganglia networks.