Laminar compartmentalization of attention modulation in area V4 aligns with the demands of visual processing hierarchy in the cortex.
Laminar compartmentalization of attention modulation in area V4 aligns with the demands of visual processing hierarchy in the cortex.
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DOI：
10.1038/s41598-023-46722-8
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发表时间：
2023-11-09
影响因子：
4.6
通讯作者：
中科院分区：
文献类型：
--
作者：
注意力选择性地增强视觉V4区对低对比度刺激的神经反应，V4区是一个关键的中枢，负责将投射向上和向下发送到视觉层次。对比度信息的真实编码是早期视觉区域中的关键计算，而编码更高级别特征的后期阶段受益于对低对比度的改进的灵敏度。在注意状态下，V4区如何满足这些不同的信息处理需求尚不清楚。我们发现，注意调制V4是皮质层和细胞类特异性。假定的兴奋性神经元在浅层显示增强的低对比度信息，而深层表现出对比度无关的缩放。计算模型表明，抑制性神经元的空间整合程度是这种层状差异背后的机制。考虑到表层神经元被称为项目到更高的领域和深层的早期视觉领域，我们的研究结果表明，注意力和对比度之间的相互作用在V4区隔，与视觉处理层次的要求。
Attention selectively enhances neural responses to low contrast stimuli in visual area V4, a critical hub that sends projections both up and down the visual hierarchy. Veridical encoding of contrast information is a key computation in early visual areas, while later stages encoding higher level features benefit from improved sensitivity to low contrast. How area V4 meets these distinct information processing demands in the attentive state is unknown. We found that attentional modulation in V4 is cortical layer and cell-class specific. Putative excitatory neurons in the superficial layers show enhanced boosting of low contrast information, while those of deep layers exhibit contrast-independent scaling. Computational modeling suggested the extent of spatial integration of inhibitory neurons as the mechanism behind such laminar differences. Considering that superficial neurons are known to project to higher areas and deep layers to early visual areas, our findings suggest that the interactions between attention and contrast in V4 are compartmentalized, in alignment with the demands of the visual processing hierarchy.
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影响因子：
3.7
作者：
Felleman, Daniel J.;Van Essen, David C.
通讯作者：
Van Essen, David C.
DOI：
10.1126/science.1236425
发表时间：
2013-06-28
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Constantinople CM;Bruno RM
通讯作者：
Bruno RM
影响因子：
2.5
作者：
DISTLER, C;BOUSSAOUD, D;UNGERLEIDER, LG
通讯作者：
UNGERLEIDER, LG
影响因子：
64.8
作者：
通讯作者：
--
DOI：
10.1002/cne.22111
发表时间：
2009-10-01
期刊：
The Journal of comparative neurology
影响因子：
--
作者：
Constantinople CM;Disney AA;Maffie J;Rudy B;Hawken MJ
通讯作者：
Hawken MJ