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Beyond Sensory Coding: The Cognitive Context of Olfactory Neurodynamics

机译:超越感官编码:嗅觉神经动力学的认知语境

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The local field potential from the mammalian olfactory system displays several oscillatory modes. Gamma oscillations (40-100 Hz) are associated with odor stimulation in the olfactory bulb (OB) and are enhanced with odor discrimination learning in a 2alternative choice task when odors are very similar. Beta oscillations (15-30 Hz) are associated with learning in a goo-go task. These two oscillatory modes represent different cognitive states, and different networks appear to support them. Gamma oscillations are produced locally within the OB, while beta oscillations rely on bidirectional connections with the rest of the olfactory and limbic systems. These results help elucidate the contextdependent sensory representation seen at every neurophysiological level in the OB.
机译:来自哺乳动物嗅觉系统的局部场电势显示出几种振荡模式。伽马振荡(40-100 Hz)与嗅球(OB)中的气味刺激有关,当气味非常相似时,在第2种替代选择任务中,通过气味识别学习增强了伽马振荡。 Beta振荡(15-30 Hz)与执行/不执行任务中的学习有关。这两种振荡模式表示不同的认知状态,并且不同的网络似乎支持它们。伽马振荡在OB内局部产生,而β振荡则依赖于与嗅觉和边缘系统其余部分的双向连接。这些结果有助于阐明在OB的每个神经生理学水平上所见的与情境有关的感觉表现。

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