Gurney M E
Brain Res. 1982 Jan 7;231(1):153-72. doi: 10.1016/0006-8993(82)90015-4.
The capacity for song is masculinized in female zebra finches by exposure to 17 beta-estradiol at hatching, and requires continual exposure to androgen for its behavioral expression in the adult. The stereotypy of the song developed by estrogenized females can be as good as that of male song. The sexual dimorphism in behavioral capacity for song parallels morphological sex differences in the efferent motor pathway which participates in the production of song. Estradiol induces the cytoarchitectonic masculinization of the telencephalic nuclei within the motor system for song, and renders them able to respond morphologically when song is induced in estrogenized females by exposure to androgen as adults.
雌性斑胸草雀在孵化时接触17β-雌二醇后，其鸣叫能力会被雄性化，并且在成年后其行为表达需要持续接触雄激素。由雌激素化的雌性所形成的鸣叫刻板模式可以与雄性鸣叫的模式一样好。鸣叫行为能力的性别二态性与参与鸣叫产生的传出运动通路中的形态学性别差异相似。雌二醇诱导了鸣叫运动系统中终脑核团的细胞结构雄性化，并且当成年雌激素化雌性接触雄激素而诱发鸣叫时，这些核团能够产生形态学反应。
