Spatiotemporal dynamics of the functional architecture for gain fields in inferior parietal lobule of behaving monkey.
Spatiotemporal dynamics of the functional architecture for gain fields in inferior parietal lobule of behaving monkey.
复制标题
行为猴顶下小叶增益场功能结构的时空动力学。
DOI：
10.1093/cercor/bhj155
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Sejnowski,Terrence
中科院分区：
文献类型：
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作者：
Siegel,RalphM;Duann,Jeng-Ren;Jung,Tzyy-Ping;Sejnowski,Terrence
内在的光学成像显示了一个代表性的眼睛的位置顺利映射在表面的顶下小叶的行为猴子。我们在这里证明，血管成像沿着与皮层有大的信号调整有时，但不总是，以匹配周围的组织。采用独立成分分析（伊卡）探讨了血管与周围组织在空间和时间上的关系。伊卡仅使用单次试验数据，发现了一系列区域，这些区域对应于从远程位点到血管的激活信号的血管传播。血管信号形成了一个新的地图皮质功能的功能血管架构叠加在皮质功能架构。此外，在光学数据中纳入时间方面允许通过任务及时跟踪顶下小叶的调谐，展示了可能用于更高认知功能的不寻常调谐特性的表达。
Intrinsic optical imaging has revealed a representation of eye position smoothly mapped across the surface of the inferior parietal lobule in behaving monkeys. We demonstrate here that blood vessels imaged along with the cortex have large signals tuned sometimes, but not always, to match the surrounding tissue. The relationship between the vessels and surrounding tissue in both space and time was explored using independent component analysis (ICA). Working only with single-trial data, ICA discovered a sequence of regions corresponding to the vascular propagation of activated signals from remote loci into the blood vessels. The vascular signals form a novel map of cortical function—the functional angioarchitecture—superimposed upon the cortical functional architecture. Furthermore, the incorporation of temporal aspects in optical data permitted the tuning of the inferior parietal lobule to be tracked in time through the task, demonstrating the expression of unusual tuning properties that might be exploited for higher cognitive functions.