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首页> 外文期刊>The European Journal of Neuroscience >Do superior colliculus projection zones in the inferior pulvinar project to MT in primates?
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Do superior colliculus projection zones in the inferior pulvinar project to MT in primates?

机译：下部下丘的上丘突区是否在灵长类中投射到MT？

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摘要

In order to determine the relationship of superior colliculus inputs to thalamic neurons projecting to the middle temporal visual area (MT), injections of wheat germ agglutinin conjugated with horseradish peroxidase were placed in the superior colliculus of three owl monkeys, with injections of Fast Blue in the MT. The locations of labelled terminals and neurons in the posterior thalamus were related to four architectonically distinct nuclei of the inferior pulvinar (Stepniewska & Kaas, Vis. Neurosci. 14, pp.1043-1060, 1997). Fast Blue injections in the MT labelled neurons largely in the medial nucleus of the inferior pulvinar. A few labelled neurons were found in the adjoining central medial nucleus of the inferior pulvinar, as well as in the lateral pulvinar and the dorsal lateral geniculate nucleus. Superior colliculus inputs were most dense in the posterior and medial nuclei of the inferior pulvinar. There were sparser inputs to the central lateral nucleus of the inferior pulvinar, locations in the lateral and medial pulvinar, and the dorsal lateral geniculate nucleus. The results indicate that the medial nucleus of the inferior pulvinar, the major projection zone to the MT, does not receive a significant input from the superior colliculus.
机译：为了确定上丘输入与投射到颞中视区（MT）的丘脑神经元的关系，将与辣根过氧化物酶结合的小麦胚芽凝集素注射液注入三只猫头鹰猴的上丘，并在注射后注入Fast Blue。 MT。丘脑后部标记的末端和神经元的位置与下丘脑的四个在结构上不同的核有关（Stepniewska＆Kaas，Vis。Neurosci。14，pp.1043-1060，1997）。在蓝色标记的神经元中，在下睑内侧核中快速蓝注射。在下丘脑的相邻中央内侧核以及外侧丘脑和背外侧膝状核中发现了一些标记的神经元。上丘的输入在下丘脑的后核和中核最密集。下腰中央中央核有较稀疏的输入，在外侧和内侧中央有位置，而在外侧背有膝状核。结果表明，下丘脑内侧核（MT的主要投影区）没有收到来自上丘的重要输入。

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