School of Life Sciences, Zhengzhou University, No. 100 Science Avenue, Zhengzhou, 450001, Henan Province, People's Republic of China.
Sci Rep. 2022 Jan 10;12(1):367. doi: 10.1038/s41598-021-03876-7.
The posterior pallial amygdala (PoA) is located on the basolateral caudal telencephalon, including the basal division of PoA (PoAb) and the compact division of PoA (PoAc). PoA plays a vital role in emotion regulation and is considered a part of the amygdala in birds. However, the regulatory functions responsible for motor behaviors and emotions between PoAb and PoAc are poorly understood. Therefore, we studied the structure and function of PoA by tract-tracing methods, constant current electrical stimulation, and different dopamine receptor drug injections in pigeons (Columba livia domestica). PoAb connects reciprocally with two nuclear groups in the cerebrum: 1) a continuum comprising the temporo-parieto-occipitalis, corticoidea dorsolateralis, hippocampus, and parahippocampalis areas and 2) rostral areas of the hemisphere, including the nucleus septalis lateralis and nucleus taeniae amygdalae. Extratelencephalic projections of PoAb terminate in the lateral hypothalamic nucleus and are scattered in many limbic midbrain regions. PoAb and PoAc mainly mediated the turning movement. In the 'open-field' test, D1 agonist and D2 antagonist could significantly reduce the latency period for entering into the central area and increase the residence time in the central area, whereas D1 antagonist and D2 agonist had the opposite effect. PoAb and PoAc are important brain areas that mediate turning behavior.
后眶额皮质（PoA）位于大脑外侧基底部的尾端，包括 PoA 的基底部（PoAb）和紧凑部（PoAc）。PoA 在情绪调节中起着至关重要的作用，被认为是鸟类杏仁核的一部分。然而，关于 PoAb 和 PoAc 之间负责运动行为和情绪的调节功能还知之甚少。因此，我们通过示踪方法、恒流电刺激以及向鸽子（Columba livia domestica）注射不同的多巴胺受体药物来研究 PoA 的结构和功能。PoAb 与大脑中的两个核团相互连接：1）由颞顶枕叶皮质、皮质背外侧、海马和海马旁回组成的连续体；2）半球的前区，包括外侧隔核和杏仁核带核。PoAb 的大脑外投射终末止于外侧下丘脑核，并在许多边缘中脑区域分散。PoAb 和 PoAc 主要介导转向运动。在“旷场”测试中，D1 激动剂和 D2 拮抗剂可显著缩短进入中央区域的潜伏期，并增加在中央区域的停留时间，而 D1 拮抗剂和 D2 激动剂则有相反的效果。PoAb 和 PoAc 是介导转向行为的重要脑区。
