Slow intrinsic rhythm in the koniocellular visual pathway

Cheong S.K.; Tailby C.; Martin P.R.Levitte J.B.Solomona S.G.

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Slow intrinsic rhythm in the koniocellular visual pathway

机译：Slow intrinsic rhythm in the koniocellular visual pathway

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Slow rhythmic changes in nerve-cell activity are characteristic of unconscious brain states and also may contribute to waking brain function by coordinating activity between cortical and subcortical structures. Here we show that slow rhythms are exhibited by the koniocellular (K) pathway, one of three visual pathways beginning in the eye and projecting through the lateral geniculate visual relay nucleus to the cerebral cortex. We recorded activity in pairs and ensembles of neurons in the lateral geniculate nucleus of anesthetized marmoset monkeys. We found slow rhythms are common in K cells but are rare in parvocellular and magnocellular cell pairs. The time course of slow K rhythms corresponds to subbeta (<10 Hz) EEG frequencies, and high spike rates in K cells are associated with low power in the theta and delta EEG bands. By contrast, spontaneous activity in the parvocellular and magnocellular pathways is neither synchronized nor strongly linked to EEG state. These observations suggest that parallel visual pathways not only carry different kinds of visual signals but also contribute differentially to brain circuits at the first synapse in the thalamus. Differential contribution of sensory streams to rhythmic brain circuits also raises the possibility that sensory stimuli can be tailored to modify brain rhythms.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2011年第35期|14659-14663|共5页
作者
Cheong S.K.; Tailby C.; Martin P.R.Levitte J.B.Solomona S.G.;
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作者单位

Florey Neuroscience Institutes (Austin), Heidelberg, VIC 3084, Australia;

Australian Research Council Centre of Excellence in Vision Science, University of Sydney, Sydney, NSW 2001, Australia;

Department of Biology, City College of New York, New York, NY 10031, United States;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
Anesthesia; Epilepsy; Parallel pathways; Sleep-wake cycles; Visual system;

Slow intrinsic rhythm in the koniocellular visual pathway

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