Oscillations and sparsening of odor representations in the mushroom body
Oscillations and sparsening of odor representations in the mushroom body
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DOI：
10.1126/science.1070502
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发表时间：
2002-07-19
期刊：
影响因子：
56.9
通讯作者：
Laurent, G
中科院分区：
文献类型：
--
作者：
Perez-Orive, J;Mazor, O;Laurent, G
在昆虫嗅觉系统中，振荡同步在功能上是相关的，反映了动态神经组件的连贯激活。我们研究了这种振荡同步在该系统中网络之间的信息传输中的作用。触角叶是嗅觉传入信号的必需中继并产生振荡输出。蘑菇体负责嗅觉和其他记忆的形成和检索。这些结构的气味表示格式显着不同。虽然触角叶中的表征是密集的、动态的、看似多余的，但它们是稀疏的，并且由蘑菇体中更具选择性的神经元携带。这种转换依赖于振荡动力学以及固有和电路特性的组合，这些特性共同作用以选择性地过滤和合成触角波瓣的输出。这些结果为相关码的功能相关性提供了直接支持，并阐明了传感网络中振荡同步的作用。
In the insect olfactory system, oscillatory synchronization is functionally relevant and reflects the coherent activation of dynamic neural assemblies. We examined the role of such oscillatory synchronization in information transfer between networks in this system. The antennal lobe is the obligatory relay for olfactory afferent signals and generates oscillatory output. The mushroom body is responsible for formation and retrieval of olfactory and other memories. The format of odor representations differs significantly across these structures. Whereas representations are dense, dynamic, and seemingly redundant in the antennal lobe, they are sparse and carried by more selective neurons in the mushroom body. This transformation relies on a combination of oscillatory dynamics and intrinsic and circuit properties that act together to selectively filter and synthesize the output from the antennal lobe. These results provide direct support for the functional relevance of correlation codes and shed some light on the role of oscillatory synchronization in sensory networks.