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首页> 外文期刊>The European Journal of Neuroscience >Spatio-temporal response properties of local field potentials in the primate superior colliculus
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Spatio-temporal response properties of local field potentials in the primate superior colliculus

机译：灵长类动物卓越小芯片中当地场势的时空响应性能

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摘要

Local field potentials (LFPs) are becoming increasingly popular in neurophysiological studies. However, to date, most of the knowledge about LFPs has been obtained from cortical recordings. Here, we recorded single unit activity (SUA) and LFPs simultaneously from the superior colliculus (SC) of behaving rhesus monkeys. The SC is a midbrain structure that plays a central role in the visual orienting response. Previous studies have characterised the visual and visuomotor response properties of SUA in the superficial layers of the SC and the intermediate layers of the SC, respectively. We found that the signal properties of SUA were well preserved in the LFPs recorded from the SC. The SUA and LFPs had similar spatial and temporal properties, and the response properties of LFPs differed across layers, i.e. purely visual in the superficial layers of the SC but showing significant motor responses in the intermediate layers of the SC. There were also differences between SUA and LFPs. LFPs showed a significant reversal of activity following the phasic visual response, suggesting that the neighboring neurons were suppressed. The results indicate that the LFP can be used as a reliable measure of the SC activity in lieu of SUA, and open up a new way to assess sensorimotor processing within the SC.
机译：本地领域电位（LFP）在神经生理学研究中越来越受欢迎。但是，迄今为止，大多数关于LFP的知识都是从皮质录音获得的。在这里，我们从表现恒河猴的高级小编（SC）同时记录单个单元活动（SUA）和LFP。 SC是中脑结构，在视觉定向响应中起着核心作用。以前的研究表征了SUA在SC的浅层层和SC的中间层中的视觉和瓜瓜素反应性质。我们发现SUA的信号特性很好地保存在从SC记录的LFP中保存。 SUA和LFP具有相似的空间和时间特性，并且LFP的响应性能不同于层，即纯粹视觉在SC的浅层层中，但在SC的中间层中显示出显着的电动机响应。 SUA和LFP之间也存在差异。 LFP呈现阶段视觉响应后显示出显着的活性，表明邻近神经元被抑制。结果表明，LFP可以用作SC活动的可靠度量代替SUA，并开辟了一种新的方法来评估SC内的感觉电流处理。

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