Principles of GABAergic signaling in developing cortical network dynamics.
Knut Kirmse1, Chuanqiang Zhang1
1Department of Neurophysiology, Institute of Physiology, University of Würzburg, 97070 Würzburg, Germany.
Cell Reports
|March 30, 2022
Summary
This review explains how GABAergic interneurons gain network functions during development. Inhibitory stabilization shapes cortical dynamics, impacting sensation, cognition, and potentially neonatal seizures.
Area of Science:
- Neuroscience
- Developmental Biology
Background:
- GABAergic signaling is crucial for stabilizing mature cortical circuits.
- Inhibitory interneurons coordinate neuronal firing for sensation and cognition.
Purpose of the Study:
- To present a conceptual framework on the developmental acquisition of GABAergic interneuron network functions.
- To examine the role of inhibitory stabilization in shaping cortical development.
Main Methods:
- Review of developmental milestones in GABAergic signaling in rodent visual cortex and hippocampus.
- Analysis of cell-type-specific synaptic inhibition strengthening.
- Translation of findings to human cortical development.
Main Results:
- Patterned activity initially occurs without functional inhibitory stabilization.
- Strengthening of GABAergic inhibition around eye opening shapes network dynamics.
- Developing cortex gradually disengages from external synaptic drive.
Conclusions:
- GABAergic interneurons progressively acquire network functions during development.
- Understanding this process has implications for treating neonatal seizures.
- Inhibitory stabilization is key to cortical maturation and function.
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