College of Life Science, South China Normal University, Key Laboratory of Ecology and Environmental Science in Higher Education of Guangdong Province, Guangzhou 510631, China.
Neurosci Bull. 2010 Apr;26(2):147-52. doi: 10.1007/s12264-010-1010-4.
To observe the sexual differences in electrophysiological properties of neurons in the robust nucleus of the arcopallium (RA) in adult zebra finches, and to provide the direct electrophysiological evidence for the sexual dimorphism of birdsong.
Whole-cell recording was used to record the spontaneous action potential firing rates from RA projection neurons in acute brain slices.
The projection neurons of RA in male birds fired spontaneously at 10 Hz or above, while in female birds, the frequency was significantly lower, and even no firings could be detected.
There is a sexual difference in electrophysiological properties of projection neurons in RA, which may result from the difference in the levels of steroid hormones in birds.
观察成年斑马雀弓状核粗壮部（RA）神经元的电生理特性的性别差异，为鸟类鸣叫声的性别二态性提供直接的电生理学证据。
在急性脑切片中使用全细胞膜片钳记录法记录 RA 投射神经元的自发性动作电位发放率。
雄性鸟类的 RA 投射神经元以 10 Hz 或更高的频率自发放电，而在雌性鸟类中，频率显著降低，甚至检测不到放电。
RA 投射神经元的电生理特性存在性别差异，这可能是由于鸟类中类固醇激素水平的差异所致。
