Integration of binocular vision and motor state to promote prey pursuit

Guangnan Tian, Thomas Ka Chung Lam, Gewei Yan, Yingzhu He, Biswadeep Khan, Jianan Qu, Julie Lee Semmelhack
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Abstract

Most animals with two eyes combine the inputs to achieve binocular vision, which can serve numerous functions, and is particularly useful in hunting prey. However, the mechanisms by which visual information from the two eyes are combined remain largely unknown. To address this question, we identified the binocular neurons that respond to prey in zebrafish (bino-PRNs). These neurons respond specifically to prey, and their activity is enhanced during hunting. To explore the relationship between bino-PRNs and hunting, we optogenetically induced hunting and found that the bino-PRNs receive excitatory input during hunting. To determine the role of the bino-PRNs in behavior, we optogenetically activated them, and found that they promote forward prey capture swims. Our results support a model where bino-PRNs integrate sensory information from the two eyes with hunting state information to drive approach toward prey in the binocular zone.
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整合双目视觉和运动状态,促进对猎物的追逐
大多数动物都有两只眼睛,它们将输入的信息结合起来,形成双眼视觉,从而实现多种功能,在捕猎猎物时尤其有用。然而,双眼视觉信息的结合机制在很大程度上仍是未知的。为了解决这个问题,我们确定了斑马鱼对猎物做出反应的双眼神经元(bino-PRNs)。这些神经元专门对猎物做出反应,它们的活动在捕猎过程中会增强。为了探索双目-PRNs与捕猎之间的关系,我们通过光遗传诱导捕猎,发现双目-PRNs在捕猎过程中接受兴奋性输入。为了确定双核-PRNs在行为中的作用,我们对其进行了光遗传激活,发现它们能促进向前捕捉猎物的游动。我们的研究结果支持这样一个模型,即双目PRN将来自双眼的感觉信息与狩猎状态信息整合在一起,以驱动向双目区域内的猎物靠近。
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