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首页> 外文期刊>The Journal of Neuroscience: The Official Journal of the Society for Neuroscience >V1 interpatch projections to v2 thick stripes and pale stripes.
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V1 interpatch projections to v2 thick stripes and pale stripes.

机译：V1 interpatch凸起到V2厚条纹和浅色条纹。

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摘要

Cytochrome oxidase (CO) reveals two compartments in V1 (patches and interpatches) and three compartments in V2 (thin, pale, and thick stripes). Previously, it was shown that thin stripes receive input predominantly from patches. Here we examined the projections to thick and pale stripes in macaques, revealed by retrograde tracer injections. After thick stripe injection, cells were distributed in layer 2/3 (67%), layer 4A (7%), layer 4B (23%), and layer 5/6 (2%). Except in layer 5/6, cells were concentrated in interpatches, with a stronger bias in layer 2/3 (84%) than in layer 4B (75%). After pale stripe injection, cells were found in layer 2/3 (87%), layer 4A (2%), layer 4B (10%), and layer 5/6 (2%). As for thick stripes, cells were located preferentially in interpatches in layer 2/3 (84%) and layer 4B (72%) but not in layer 5/6. Thick stripes received a higher proportion of their input from layer 4B, compared with pale stripes, consistent with reports that thick stripe neurons exhibit a pronounced layer 4B influence. This difference aside, both stripe types receive similar inputs from V1, at least in terms of cortical layer and CO compartment. This finding was bolstered by injecting different tracers into pale and thick stripes; 10-27% of cells were double labeled, with most located in interpatches. These results suggest that the distinctive receptive field properties of neurons in thick and pale stripes are generated by local V2 circuits, or by other specific projections, rather than by differing sources of laminar and compartmental input from V1.
机译：细胞色素氧化酶（CO）在V1（贴片和夹层）中揭示了两个隔室，并且在V2（薄，浅，厚条纹中的三个隔室）。以前，表明细条纹主要从贴片接收输入。在这里，我们将投影检查到猕猴中的厚和浅色条纹，由逆行示踪喷射透露。在浓稠条纹注射后，细胞分布在层2/3（67％），层4a（7％），层4b（23％）和第5/6层（2％）中。除了第5/6层之外，细胞浓缩在夹层中，在2/3层（84％）中具有较强的偏压（84％），在第4b层（75％）中。在浅色条纹注射后，在层2/3（87％），层4a（2％），层4b（10％）和第5/6层（2％）中发现细胞。对于粗条纹，小细胞优选地定位在层2/3（84％）和层4b层（72％）中的杂交中，但不含层5/6。与浅色条纹相比，厚条纹从层4b的输入比例从层4b上获得更高的比例，与厚条状神经元表现出明显的层4b影响的报道一致。除了这种条纹类型的情况下，两个条带类型从V1接收类似的输入，至少在皮质层和CO盒方面。通过将不同的示踪剂注入苍白和厚的条纹来使该发现被撑起; 10-27％的细胞被双重标记，大多数位于床间。这些结果表明，厚浅色条纹的神经元的独特接受场特性由局部V2电路或其他特定突出物产生，而不是通过V1的不同源和距离的层和舱内输入。

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