Spatiotemporal representations in the olfactory system

Spatiotemporal representations in the olfactory system
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嗅觉系统中的时空表征

DOI:
10.1016/j.tins.2007.01.001
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发表时间:
2007
影响因子:
15.9
通讯作者:
T. Margrie
T. Margrie
中科院分区:
医学1区
文献类型:
--
作者:
Andreas T. Schaefer;T. Margrie

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要全面了解任何一种感觉、运动或认知任务的机制,都需要从系统到细胞水平的分析。在嗅觉方面,啮齿动物的新行为证据提供了神经处理时间的时间限制,对应于不到150 ms(单次嗅探的时间尺度)。最近从嗅球vivodata表明,在每一个嗅探,气味表示不仅是空间组织,但也在时间上结构的气味特异性模式的发病lavage。因此,我们建议,气味的空间表示是不是一个静态的,而是演变在一个嗅探,从而难以区分类似的气味,它是必要的嗅觉系统“等待”后来激活的组件。基于这样的证据,我们已经设计了一个工作模型,以进一步评估这种时空过程的相关性气味表示。
A complete understanding of the mechanisms underlying any kind of sensory, motor or cognitive task requires analysis from the systems to the cellular level. In olfaction, new behavioural evidence in rodents has provided temporal limits on neural processing times that correspond to less than 150ms – the timescale of a single sniff. Recentin vivodata from the olfactory bulb indicate that, within each sniff, odour representation is not only spatially organized, but also temporally structured by odour-specific patterns of onset latencies. Thus, we propose that the spatial representation of odour is not a static one, but rather evolves across a sniff, whereby for difficult discriminations of similar odours, it is necessary for the olfactory system to ‘wait' for later-activated components. Based on such evidence, we have devised a working model to assess further the relevance of such spatiotemporal processes in odour representation.
二元混合物及其成分之间气味质量辨别的延迟和准确性。
DOI: 10.1093/chemse/25.3.247
发表时间: 2000
期刊: Chemical senses
影响因子: 3.5
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