School of Electrical Engineering, Zhengzhou University, Zhengzhou, 450000, China; Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology, Zhengzhou University, Zhengzhou, 450000, China.
School of Electrical Engineering, Zhengzhou University, Zhengzhou, 450000, China; Henan Key Laboratory of Brain Science and Brain-Computer Interface Technology, Zhengzhou University, Zhengzhou, 450000, China; School of Intelligent Manufacturing, Huanghuai University, Zhumadian, 463000, China.
Brain Res Bull. 2019 Nov;153:257-265. doi: 10.1016/j.brainresbull.2019.09.005. Epub 2019 Sep 18.
Avian hippocampus (Hp) and nidopallium caudolaterale (NCL) are believed to play key roles in goal-directed behavior. However, it is still unclear whether there are interactions between the two brain regions in the goal-directed behavior of pigeons. To investigate the interactions between the Hp and the NCL in the goal-directed behavior, we recorded local field potential (LFP) signals from the two regions simultaneously when the pigeons performed a goal-directed decision-making task. Amplitude-amplitude coupling analysis revealed that the coupling value between the LFP recorded from the Hp and that from the NCL increased significantly (P < 0.05) in slow gamma-band (40-60 Hz) during the turning area. In addition, the LFP functional network analysis demonstrated the LFP functional connections between the Hp and the NCL increased significantly (P < 0.05) in the turning area. The result of partial directed coherence (PDC) analysis showed that the predominant direction of information flow is thought to be from the Hp to the NCL. These findings suggest that there are causal functional interactions between the Hp and the NCL by which information is transmitted between the two regions relevant to goal-directed behavior.
鸟类的海马体（Hp）和尾侧部的脑皮层（NCL）被认为在目标导向行为中发挥着关键作用。然而，目前尚不清楚在鸽子的目标导向行为中，这两个脑区之间是否存在相互作用。为了研究 Hp 和 NCL 在目标导向行为中的相互作用，我们在鸽子执行目标导向决策任务时同时记录了来自这两个区域的局部场电位（LFP）信号。幅度-幅度耦合分析显示，在转弯区慢伽马带（40-60 Hz）中，Hp 和 NCL 记录的 LFP 之间的耦合值显著增加（P<0.05）。此外，LFP 功能网络分析表明，Hp 和 NCL 之间的 LFP 功能连接在转弯区显著增加（P<0.05）。部分定向相干（PDC）分析的结果表明，信息的主要流向被认为是从 Hp 到 NCL。这些发现表明，Hp 和 NCL 之间存在因果功能相互作用，通过这种相互作用，与目标导向行为相关的两个区域之间传递信息。
