Emergent spatial goals in an integrative model of the insect central complex.
Emergent spatial goals in an integrative model of the insect central complex.
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DOI：
10.1371/journal.pcbi.1011480
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发表时间：
2023-12
影响因子：
4.3
通讯作者：
中科院分区：
文献类型：
--
作者：
昆虫中央复合体似乎通过载体操作编码和处理空间信息。在这里，我们借鉴了最近对电路结构的见解，融合了以前的传感器引导导航，路径集成和矢量记忆模型。具体而言，我们建议，allocentric编码的路径整合提供的位置创建一个空间稳定的锚收敛的感觉信号，是相关的在多个行为的情况下。allocentric参考帧路径整合的目标方向转化为一个目标位置，我们通过建模表明，它可以提高方法的感官目标在嘈杂，杂乱的环境中，或与时间稀疏的刺激。我们进一步表明，相同的电路可以提高性能，在更复杂的导航任务的路线如下。该模型提出了中央复合体电路元件的特定功能作用，这有助于解释它们在昆虫物种中的高保存性。即使是神经资源减少的微小动物也需要解决二维空间问题。在本文中，我们建立了一个神经网络模型，基于中央复杂的连接，支持昆虫视觉导航的地标，并按照以前学习的路线。这结合了先前在昆虫大脑中突出显示的不同特征，（1）内部罗盘，允许它们的方向的非中心表示，（2）定位系统，从它们整合路径的能力中继承，（3）环境中相关位置的长期记忆，例如，允许昆虫反复访问喂食器，以及（4）当提供奖励信号时提供稳定的目标方向的感觉引导系统。我们以互补的方式结合了这些不同的电路，这表明路径整合在所有昆虫导航中的关键作用，而不仅仅是确保归巢行为。具体而言，使用中央复杂神经元回路的能力来存储和操纵导航向量，我们的实现通过组合基于传感器的向量，指向目标，和归巢向量，指向稳定的原点来编码导航目标的allocentric位置。我们表明，这显着提高了两个视觉导航范例的导航，达到一个遥远的公认的目标，并遵循基于全景记忆的路线。
The insect central complex appears to encode and process spatial information through vector manipulation. Here, we draw on recent insights into circuit structure to fuse previous models of sensory-guided navigation, path integration and vector memory. Specifically, we propose that the allocentric encoding of location provided by path integration creates a spatially stable anchor for converging sensory signals that is relevant in multiple behavioural contexts. The allocentric reference frame given by path integration transforms a goal direction into a goal location and we demonstrate through modelling that it can enhance approach of a sensory target in noisy, cluttered environments or with temporally sparse stimuli. We further show the same circuit can improve performance in the more complex navigational task of route following. The model suggests specific functional roles for circuit elements of the central complex that helps explain their high preservation across insect species. Even tiny animals with reduced neuronal resources need to solve 2 dimension spatial problems. In this paper, we modelled a neural network, based on the central complex connectivity, that sustains insect visual-guided navigation both to a landmark and following a previously learned route. This combined different features that have been previously highlighted in the insect brain, (1) an inner compass, allowing an allocentric representation of their orientation, (2) a positioning system, inherited from their ability to integrate their path, (3) a long-term memory of relevant locations in the environment, that allows insect to revisit feeders repeatedly for example, and (4) a sensory guidance system that provides a stable goal direction when a rewarded signal is provided. We combined these different circuits in an complementary fashion, suggesting a crucial role for path integration in all insect navigation, beyond simply ensuring homing behaviour. Specifically, using the capability of the central complex neuronal circuit to store and manipulate navigational vectors, our implementation encodes the allocentric position of the navigation goal by combining a sensory-based vector, directed toward a goal, and a homing vector, directed toward a stable origin. We show this improves significantly the navigation in two visual-guidance paradigms, reaching a distant recognised target and following a route based on a panoramic memory.
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DOI：
10.1016/j.cub.2021.08.006
发表时间：
2021-10-25
期刊：
Current biology : CB
影响因子：
--
作者：
Behbahani AH;Palmer EH;Corfas RA;Dickinson MH
通讯作者：
Dickinson MH
影响因子：
9.2
作者：
Corfas, Roman A.;Sharma, Tarun;Dickinson, Michael H.
通讯作者：
Dickinson, Michael H.
影响因子：
5.3
作者：
Baker, Keeley L.;Dickinson, Michael;Smear, Matthew C.
通讯作者：
Smear, Matthew C.
DOI：
10.1073/pnas.1904308116
发表时间：
2019-07-09
影响因子：
11.1
作者：
Dacke, Marie;Bell, Adrian T. A.;el Jundi, Basil
通讯作者：
el Jundi, Basil
影响因子：
64.8
作者：
Fisher, Yvette E.;Marquis, Michael;D'Alessandro, Isabel;Wilson, Rachel, I
通讯作者：
Wilson, Rachel, I