The neural tracer biotionylated dextran amine (BDA) and immunohistochemical methods were used to study neuronal connections in area X of the lobus and the expression of substance P in the striated mannikin.

• 用双向神经示踪剂生物素结合的葡聚糖胺和SP 免疫组织化学方法研究白腰文鸟发声学习中枢嗅叶X区的神经投射和P物质在发声中枢及相关核团内的分布。