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新化和成年虫的嗅觉系统结构和功能

Kui Sun¹, Subhasis Ray^1,2, Nitin Gupta^1,3

¹Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.

Scientific reports

|January 31, 2024

概括

新出的虫拥有完全发达的嗅觉系统,在结构和功能上与成年人相似. 这种嗅觉系统处理的气味是相似的,尽管大小和经验不同.

科学领域:

神经科学是一个神经科学.
嗅觉系统的开发和开发
动物的感官系统是动物感官系统.

背景情况:

感官系统的发展对于理解神经处理至关重要.
研究动物的感官系统如何适应生长和环境相互作用,可以了解神经网络的可塑性.

研究的目的:

为了比较新化虫和成年虫的外周嗅觉通路的结构和功能.
为了确定嗅觉系统是否在化时完全形成.

主要方法:

嗅觉感官神经元 (OSN) 在幼和成年人中调节的比较分析.
在两个年龄组的天线叶 (ALs) 中对局部神经元 (LNs) 和投射神经元 (PNs) 的形态检查.
电生理学记录以评估气味引起的反应和局部场势 (LFP) 振荡.

主要成果:

幼和成年人中的 OSN 种群表现出类似的气味调节.
在各个年龄组中,LN和PN形态相对相似,幼的体型较小.
在LNs和PNS中,气味引起的反应,包括振荡同步,是可比的,尽管化后的幼表现出较低的自发/引起PNS发射率和较低的LFP振荡频率.
幼和成年人de-antennae实验中减少的天线大小与较低的LFP振荡频率相关,这表明输入强度驱动频率发展.

结论:

虫的化器具有结构和功能上成熟的嗅觉系统.
嗅觉系统的功能与成年人相匹配,尽管体型较小,缺乏经验.
嗅觉系统频率的发育性增加与振荡电路的输入强度增加有关.

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