Sweeney Lora B, Kelley Darcy B
Molecular Neurobiology Laboratory, Salk Institute, 10010 N Torrey Pines Rd, La Jolla, CA 92037, United States.
Dept. of Biological Sciences, Columbia University, 1616 Amsterdam Avenue, New York, NY 10027, United States.
Curr Opin Neurobiol. 2014 Oct;28:34-41. doi: 10.1016/j.conb.2014.06.006. Epub 2014 Jul 2.
Work on vocal communication, influenced by a drive to understand the evolution of language, has focused on auditory processing and forebrain control of learned vocalizations. The actual hindbrain neural mechanisms used to create communication signals are understudied, in part because of the difficulty of experimental studies in species that rely on respiration for vocalization. In these experimental systems-including those that embody vocal learning-vocal behaviors have rhythmic qualities. Recent studies using molecular markers and 'fictive' patterns produced by isolated brains are beginning to reveal how hindbrain circuits generate vocal patterns. Insights from central pattern generators for respiration and locomotion are illuminating common neural and developmental mechanisms. Choice of vocal patterns is responsive to socially salient input. Studies of the vertebrate social brain network suggest mechanisms used to integrate socially salient information and produce an appropriate vocal response.
受理解语言进化的驱动影响，关于发声交流的研究主要集中在听觉处理和前脑对习得发声的控制上。用于产生交流信号的实际后脑神经机制尚未得到充分研究，部分原因是在依赖呼吸进行发声的物种中进行实验研究存在困难。在这些实验系统中——包括那些体现发声学习的系统——发声行为具有节律性。最近使用分子标记和离体大脑产生的“虚构”模式的研究开始揭示后脑回路如何产生发声模式。呼吸和运动的中枢模式发生器的见解正在阐明共同的神经和发育机制。发声模式的选择对社会显著输入有反应。对脊椎动物社会脑网络的研究表明了用于整合社会显著信息并产生适当发声反应的机制。
