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An Odor Stimulator Controlling Odor Temporal Pattern Applicable in Insect Olfaction Study

机译:用于气味嗅觉研究的气味刺激物控制气味的时间模式

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The olfactory system of an insect brain codes for information about odorant quality and quantity using the temporal pattern of neural activity as well as neurons' firing. Although an accurate odor temporal pattern is indispensable for investigations of olfactory systems, it is difficult to control in conventional odor stimulators. To overcome this problem, we fabricated an odor stimulator that can control the odor temporal pattern. The stimulator has 3 major parts: an "odor conditioner," with odor-laden air prepared with known concentrations of odorants; a Pitot tube; and a small wind tunnel of laminar flow. Using this stimulator, we realized not only timing control of the odor stimulation with millisecond order but also constant odor concentrations or intensity of stimulation, with error of 2.4% in replicated trials.
机译:昆虫大脑的嗅觉系统使用神经活动和神经元放电的时间模式来编码有关气味质量和数量的信息。尽管准确的气味时间模式对于嗅觉系统的研究是必不可少的,但是在传统的气味刺激器中却很难控制。为了克服这个问题,我们制造了一种气味刺激器,可以控制气味的时间模式。刺激器有3个主要部分:“气味调节剂”,用已知浓度的气味剂制备成充满气味的空气;皮托管以及层流的小风洞。使用这种刺激器,我们不仅实现了以毫秒级控制气味刺激的定时控制,而且实现了恒定的气味浓度或刺激强度,在重复试验中误差为2.4%。

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