Functional Organisation of the Mouse Superior Colliculus.

Functional Organisation of the Mouse Superior Colliculus.
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DOI:
10.3389/fncir.2022.792959
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发表时间:
2022
影响因子:
3.5
通讯作者:
Solomon, Samuel G.
Solomon, Samuel G.
中科院分区:
医学3区
文献类型:
--
作者:
Wheatcroft, Thomas;Saleem, Aman B.;Solomon, Samuel G.

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上丘(SC)是哺乳动物中脑的一个高度保守的区域,广泛涉及组织和行为控制。SC接收来自大量大脑区域的输入,并向大量大脑区域提供输出。不同区域和系统的解剖学连接的趋同和分化为理解SC如何促进行为提供了挑战。最近在老鼠身上的工作提供了大量的解剖数据集,以及大量的新数据,这些数据来自于识别和操纵SC内不同的细胞,以及它们在简单行为中的输入和输出。这些数据为更好地理解SC在这些行为中扮演的角色提供了机会。然而,有些观察结果乍一看似乎是矛盾的。在这里,我们回顾了最近的工作,并假设了一个简单的框架,可以捕捉到观察结果,这只需要对以前的模型进行很小的改变。具体来说,SC的功能组织可以通过假设三个截然不同的回路支持三种截然不同的简单行为来解释——逮捕、转向和触发逃跑或捕获。假设这些行为分别由光学层、中间层和深层层支持。
The superior colliculus (SC) is a highly conserved area of the mammalian midbrain that is widely implicated in the organisation and control of behaviour. SC receives input from a large number of brain areas, and provides outputs to a large number of areas. The convergence and divergence of anatomical connections with different areas and systems provides challenges for understanding how SC contributes to behaviour. Recent work in mouse has provided large anatomical datasets, and a wealth of new data from experiments that identify and manipulate different cells within SC, and their inputs and outputs, during simple behaviours. These data offer an opportunity to better understand the roles that SC plays in these behaviours. However, some of the observations appear, at first sight, to be contradictory. Here we review this recent work and hypothesise a simple framework which can capture the observations, that requires only a small change to previous models. Specifically, the functional organisation of SC can be explained by supposing that three largely distinct circuits support three largely distinct classes of simple behaviours–arrest, turning towards, and the triggering of escape or capture. These behaviours are hypothesised to be supported by the optic, intermediate and deep layers, respectively.
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