Early development of olfactory circuit function

Frontiers in Cellular Neuroscience

Neuroscience

Zihao Zhang¹  Joost X. Maier² 

[1] Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, NC, United States;null;

关键词: piriform cortex;    olfactory bulb;    neonatal;    local field potential;    oscillation;    inhibition;   

DOI  :  10.3389/fncel.2023.1225186

 received in 2023-05-18, accepted in 2023-06-29,  发布年份 2023

来源: Frontiers

【 摘 要 】

During early development, brains undergo profound changes in structure at the molecular, synaptic, cellular and circuit level. At the same time, brains need to perform adaptive function. How do structurally immature brains process information? How do brains perform stable and reliable function despite massive changes in structure? The rodent olfactory system presents an ideal model for approaching these poorly understood questions. Rodents are born deaf and blind, and rely completely on their sense of smell to acquire resources essential for survival during the first 2 weeks of life, such as food and warmth. Here, we review decades of work mapping structural changes in olfactory circuits during early development, as well as more recent studies performing in vivo electrophysiological recordings to characterize functional activity patterns generated by these circuits. The findings demonstrate that neonatal olfactory processing relies on an interacting network of brain areas including the olfactory bulb and piriform cortex. Circuits in these brain regions exhibit varying degrees of structural maturity in neonatal animals. However, despite substantial ongoing structural maturation of circuit elements, the neonatal olfactory system produces dynamic network-level activity patterns that are highly stable over protracted periods during development. We discuss how these findings inform future work aimed at elucidating the circuit-level mechanisms underlying information processing in the neonatal olfactory system, how they support unique neonatal behaviors, and how they transition between developmental stages.

【 授权许可】

Unknown   
Copyright © 2023 Maier and Zhang.