Two Brain Pathways Initiate Distinct Forward Walking Programs in Drosophila.

Two Brain Pathways Initiate Distinct Forward Walking Programs in Drosophila.
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DOI:
10.1016/j.neuron.2020.07.032
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发表时间:
2020-11-11
期刊:
影响因子:
16.2
通讯作者:
Scott, Kristin
Scott, Kristin
中科院分区:
医学1区
文献类型:
--
作者:
Bidaye, Salil S.;Laturney, Meghan;Chang, Amy K.;Liu, Yuejiang;Bockemuehl, Till;Bueschges, Ansgar;Scott, Kristin

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一只处于静止或静止状态的动物可以立即启动目标导向的行走。下行的大脑输入如何触发从非行走状态到适当的行走状态的快速转换尚不清楚。在这里,我们确定了两种神经元类型,P9和BPN,在果蝇的大脑,激活后,启动和维持两个不同的协调行走模式。P9驱动同侧转向的向前行走,接收来自中央求爱促进神经元和视觉投射神经元的输入,并且是雄性在求爱期间追求雌性所必需的。与此相反,BPN驾驶直线,向前行走,在求爱期间不需要。相反,BPN是在快速、笔直、向前行走的过程中招募的。因此,这项研究揭示了不同的大脑路径,用于目标导向的步行和快速,直线,向前步行,从而深入了解大脑如何启动上下文适当的步行程序。Bidaye等人描述了两种神经元类型P9和BPN,它们在果蝇中驱动两种不同的向前行走程序。这些大脑通路招募下游的运动回路,以特定于任务的方式行走,使得静止的动物可以直接切换到特定的行走模式。
An animal at rest or engaged in stationary behaviors can instantaneously initiate goal-directed walking. How descending brain inputs trigger rapid transitions from a non-walking state to an appropriate walking state is unclear. Here, we identify two neuronal types, P9 and BPN, in the Drosophila brain that, upon activation, initiate and maintain two distinct coordinated walking patterns. P9 drives forward walking with ipsilateral turning, receives inputs from central courtship-promoting neurons and visual projection neurons and is necessary for a male to pursue a female during courtship. In contrast, BPN drives straight, forward walking and is not required during courtship. BPN is instead recruited during and required for fast, straight, forward walking bouts. Thus, this study reveals separate brain pathways for object-directed walking and fast, straight, forward walking, providing insight into how the brain initiates context-appropriate walking programs. Bidaye et al. characterize two neuronal types P9 and BPN that drive two distinct forward walking programs in Drosophila. These brain pathways recruit the downstream motor circuits for walking in a task-specific manner such that a stationary animal can directly switch into a specific walking mode.
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