Hippocampal LFP responses during pigeon homing flight in outdoors.

IF 4.4 2区 医学 Q1 NEUROSCIENCES
Long Yang, Mengmeng Li, Lifang Yang, Zhenlong Wang, Zhigang Shang
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引用次数: 0

Abstract

The hippocampal formation (HF) plays a key role in avian spatial navigation. Previous studies suggest that the HF may serve different functions at various stages in pigeons' long-distance outdoor homing flight. However, it remains unclear whether the HF exhibits specific neural responses during these stages. In this study, we employed a wearable bimodal data recording system to simultaneously capture flight trajectories and hippocampal local field potential (LFP) signals of pigeons (either sex) during outdoor homing navigation. Our results revealed significant differences in hippocampal neural responses across the initial decision-making (DM) and en route navigation (ER) stages. Specifically, elevated LFP power in theta (4-12 Hz) and beta (12-30 Hz) bands was detected during the DM stage compared to the ER stage, while the high gamma (60-120 Hz) band exhibited the opposite pattern. In addition, we examined typical theta-beta phase-amplitude coupling (PAC) during the ER stage. Additionally, stage-specific hippocampal responses remained consistent across release sites. Notably, the difference in hippocampal responses across stages diminished along with the accumulation of homing experience. These results offer new insights into the role of the avian HF in homing flight navigation and suggest parallels between avian and mammalian hippocampal mechanisms in spatial learning.Significance Statement It remains unclear whether the hippocampal formation (HF) exhibits specific neural responses during various stages in the long-distance outdoor navigation of pigeons. By recording hippocampal local field potentials (LFPs) and positional data during natural outdoor flights, we reveal distinct neural response patterns that differentiate between initial decision-making and sustained navigation stages. We detected band-specific power and coupling responses between different navigation stages, consistent across multiple release sites. Additionally, we found that the LFP responses differences across stages gradually diminish along with the accumulation of the homing experience. Our study offers new insights into the role of the avian HF in outdoor homing flight.

鸽子户外归巢飞行时海马LFP反应。
海马形成(HF)在鸟类空间导航中起着关键作用。以往的研究表明,高频信号在鸽子长距离户外归巢飞行的不同阶段可能起着不同的作用。然而,目前尚不清楚HF是否在这些阶段表现出特定的神经反应。在这项研究中,我们采用了一种可穿戴双峰数据记录系统,同时捕捉鸽子(无论性别)在户外归航时的飞行轨迹和海马局部场电位(LFP)信号。我们的研究结果揭示了海马神经反应在初始决策(DM)和途中导航(ER)阶段的显著差异。具体来说,在DM阶段,与ER阶段相比,theta (4-12 Hz)和beta (12-30 Hz)波段的LFP功率升高,而高gamma (60-120 Hz)波段则表现出相反的模式。此外,我们还研究了ER阶段典型的θ - β相幅耦合(PAC)。此外,阶段特异性海马反应在释放部位保持一致。值得注意的是,海马反应在不同阶段的差异随着归巢经验的积累而减弱。这些结果为鸟类HF在飞行导航中的作用提供了新的见解,并表明鸟类和哺乳动物在空间学习中的海马机制之间存在相似之处。在鸽子长距离户外导航的不同阶段,海马体形成(HF)是否表现出特定的神经反应尚不清楚。通过记录自然户外飞行过程中的海马局部场电位(LFPs)和位置数据,我们揭示了区分初始决策和持续导航阶段的不同神经反应模式。我们检测了不同导航阶段之间的波段特定功率和耦合响应,在多个释放点之间是一致的。此外,我们发现不同阶段的LFP反应差异随着归巢经验的积累而逐渐减小。我们的研究为鸟类HF在室外归航中的作用提供了新的见解。
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来源期刊
Journal of Neuroscience
Journal of Neuroscience 医学-神经科学
CiteScore
9.30
自引率
3.80%
发文量
1164
审稿时长
12 months
期刊介绍: JNeurosci (ISSN 0270-6474) is an official journal of the Society for Neuroscience. It is published weekly by the Society, fifty weeks a year, one volume a year. JNeurosci publishes papers on a broad range of topics of general interest to those working on the nervous system. Authors now have an Open Choice option for their published articles
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