Shang Zhigang, Liang You, Li Mengmeng, Zhao Kun, Yang Lifang, Wan Hong
School of Electrical Engineering, Zhengzhou University.
Industrial Technology Research Institute, Zhengzhou University.
Neuroreport. 2019 Oct 9;30(14):966-973. doi: 10.1097/WNR.0000000000001312.
The avian nidopallium caudolaterale, a key region of information integration and processing, is considered to be playing an important role in operant conditioning acquisition and extinction. To reveal sequential neural information processing in the process, neural signals of different experimental periods (induction, acquisition, and extinction) from the nidopallium caudolaterale of pigeons were acquired and the energy of the specific frequency band was analyzed from the light stimulation input to the pecking action output. We found that during the induction period, the pigeons establish a relationship between the visual cue and decision behavior. The neural coding activities of pecking intention are earlier than that of light stimulation. Moreover, the neural coding activities of pecking intention move forward through strengthening and consolidation of the acquisition period. During the extinction period, the relationship of the visual cue and decision behavior is broken. The coding of light stimulation and pecking intention disappears gradually, and the disappearance of intention coding activities is earlier. The results show that there may be present an elaborate time-course contingency between the light stimulation and the pecking intention in the nidopallium caudolaterale. This study provides the electrophysiological experimental evidence for the dynamic coding mechanism of nidopallium caudolaterale.
鸟类的听觉尾外侧核是信息整合与处理的关键区域，被认为在操作性条件反射的习得和消退中发挥着重要作用。为了揭示该过程中神经信息的顺序处理，获取了鸽子听觉尾外侧核在不同实验时期（诱导期、习得期和消退期）的神经信号，并从光刺激输入到啄食动作输出分析了特定频段的能量。我们发现，在诱导期，鸽子建立了视觉线索与决策行为之间的关系。啄食意图的神经编码活动早于光刺激。此外，啄食意图的神经编码活动通过习得期的强化和巩固而提前。在消退期，视觉线索与决策行为的关系被打破。光刺激和啄食意图的编码逐渐消失，且意图编码活动的消失更早。结果表明，听觉尾外侧核中光刺激与啄食意图之间可能存在精细的时间进程偶然性。本研究为听觉尾外侧核的动态编码机制提供了电生理实验证据。
