Testosterone-dependent increase of gap-junctions in HVC neurons of adult female canaries
Testosterone-dependent increase of gap-junctions in HVC neurons of adult female canaries
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DOI：
10.1016/0006-8993(95)01448-9
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发表时间：
1996-03-11
期刊：
影响因子：
2.9
通讯作者：
GarciaSegura, LM
中科院分区：
文献类型：
--
作者：
Gahr, M;GarciaSegura, LM
金丝雀的鸣叫是由一系列相互连接的大脑区域控制的。这些区域之一，腹侧新纹状体（HVC）的尾侧核，对雄激素和雌激素敏感。在成年金丝雀中，雄性和雌性都会唱歌。女性歌曲的结构不同于男性歌唱，具有更高的可变性。唱歌的雌性动物植入丙酸睾酮（n = 5）或空的硅橡胶管（n = 5）。与未处理的歌唱雌性相比，Tehran处理的雌性产生了雄性样的歌声，并且在HVC中神经元体细胞-体细胞间隙连接的数量增加。HVC神经元的电耦合可能是重要的睾丸激素依赖性的变化的歌曲模式的金丝雀。
Singing of canaries is controlled by a chain of interconnected brain areas. One of these areas, the caudal nucleus of the ventral neostriatum (HVC), is sensitive to androgens and estrogens. In adult canaries, both male and female sing. Female song is structured differently from the male singing and characterized by a higher variability. Singing females were implanted with testosterone propionate (n = 5) or with empty silastic tubes (n = 5). Testosterone treated females developed a male-like song and had an increased number of neuronal soma-somatic gap junctions in the HVC compared with the untreated singing females. Electric coupling of HVC neurons could be important for the testosterone-dependent changes of the song pattern of canaries.