The logic of single-cell projections from visual cortex.
The logic of single-cell projections from visual cortex.
复制标题
视觉皮层单细胞投射的逻辑。
DOI:
10.1038/nature26159
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发表时间:
2018-04-05
期刊:
影响因子:
64.8
通讯作者:
Mrsic-Flogel TD
中科院分区:
文献类型:
--
作者:
Han Y;Kebschull JM;Campbell RAA;Cowan D;Imhof F;Zador AM;Mrsic-Flogel TD
Neocortical areas communicate via extensive axonal projections, but the logic of information transfer is unresolved because the projections of individual neurons have not been systematically characterized. It is unknown whether individual neurons send projections only to single cortical areas, or instead distribute signals across multiple targets. Here we determined the projection patterns of 591 individual neurons in mouse primary visual cortex (V1) using whole-brain fluorescence-based axonal tracing and high-throughput DNA sequencing of genetically barcoded neurons (MAPseq). Projections were highly diverse and divergent, collectively targeting at least 18 cortical and subcortical areas. Most neurons target multiple cortical areas, often in non-random combinations, suggesting the existence of sub-classes of intracortical projection neurons. Thus the dominant mode of intracortical information transfer is not based on “one neuron – one target area” mapping. Instead, signals carried by individual cortical neurons are shared across subsets of target areas, and thus concurrently contribute to multiple functional pathways.
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