Untangling GABAergic wiring in the cortical microcircuit.
1Division of Cerebral Circuitry, National Institute for Physiological Sciences, Okazaki, Japan; Department of Physiological Science, The Graduate University for Advanced Studies (SOKENDAI), Okazaki, Japan; Japan Science and Technology Agency, Core Research for Evolutional Science and Technology, Tokyo, Japan.
Current Opinion in Neurobiology
|March 22, 2014
Summary
Understanding the cerebral cortex requires studying inhibitory neurons. This review explores the diverse roles of gamma-aminobutyric acid (GABA) non-pyramidal cell subtypes in cortical functions and circuitry.
Area of Science:
- Neuroscience
- Cell Biology
- Computational Neuroscience
Background:
- The cerebral cortex features a complex microcircuit of pyramidal and non-pyramidal cells, with intricate wiring that is not fully understood.
- Non-pyramidal cells, particularly inhibitory subtypes, play a crucial role in regulating cortical activity via neurotransmitters like gamma-aminobutyric acid (GABA).
Purpose of the Study:
- To review the current understanding of the diverse roles of inhibitory GABAergic non-pyramidal cell subtypes.
- To elucidate their contributions to the functional architecture of the cortical microcircuitry.
Main Methods:
- This review synthesizes existing research on the morphological and functional properties of GABAergic non-pyramidal cells.
- It integrates findings from electrophysiology, morphology, and genetic studies.
Main Results:
- At least ten distinct non-pyramidal cell subtypes exist, each with specific innervation patterns.
- These subtypes differentially regulate cortical neuronal activity, highlighting their specialized functions.
Conclusions:
- Investigating the wiring properties of GABAergic non-pyramidal cells is essential for comprehending cortical circuit function.
- Understanding these inhibitory subtypes is key to deciphering the overall functional architecture of the cerebral cortex.
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