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Olfactory processing in the lateral horn of Drosophila

机译：在果蝇的横向喇叭中的嗅觉处理

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摘要

Sensing olfactory signals in the environment represents a crucial and significant task of sensory systems in almost all organisms to facilitate survival and reproduction. Notably, the olfactory system of diverse animal phyla shares astonishingly many fundamental principles with regard to anatomical and functional properties. Binding of odor ligands by chemosensory receptors present in the olfactory peripheral organs leads to a neuronal activity that is conveyed to first and higher-order brain centers leading to a subsequent odor-guided behavioral decision. One of the key centers for integrating and processing innate olfactory behavior is the lateral horn (LH) of the protocerebrum in insects. In recent years the LH of Drosophila has garnered increasing attention and many studies have been dedicated to elucidate its circuitry. In this review we will summarize the recent advances in mapping and characterizing LH-specific cell types, their functional properties with respect to odor tuning, their neurotransmitter profiles, their connectivity to pre-synaptic and post-synaptic partner neurons as well as their impact for olfactory behavior as known so far.
机译：感知环境中的嗅觉信号是几乎所有生物体的感觉系统促进生存和繁殖的一项重要任务。值得注意的是，不同动物门的嗅觉系统在解剖学和功能特性方面有着惊人的共同点。嗅觉外周器官中的化学感受器与气味配体结合，导致神经元活动被传递到第一级和更高阶的大脑中枢，从而导致随后的气味引导行为决策。昆虫前脑的侧角（LH）是整合和处理先天嗅觉行为的关键中心之一。近年来，果蝇的LH越来越受到关注，许多研究致力于阐明其回路。在这篇综述中，我们将总结LH特异性细胞类型的定位和表征的最新进展，它们在气味调节方面的功能特性，它们的神经递质分布，它们与突触前和突触后伙伴神经元的连接，以及它们对嗅觉行为的影响。

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