Fan Yanzhu, Yue Xizi, Xue Fei, Cui Jianguo, Brauth Steven E, Tang Yezhong, Fang Guangzhan
Department of Herpetology, Chengdu Institute of Biology, Chinese Academy of Sciences, No.9 Section 4, Renmin South Road, Chengdu, Sichuan, People's Republic of China.
University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, People's Republic of China.
Biol Open. 2018 Dec 3;7(12):bio035956. doi: 10.1242/bio.035956.
Sex differences in both vocalization and auditory processing have been commonly found in vocal animals, although the underlying neural mechanisms associated with sexual dimorphism of auditory processing are not well understood. In this study we investigated whether auditory perception exhibits sexual dimorphism in To do this we measured event-related potentials (ERPs) evoked by white noise (WN) and conspecific calls in the telencephalon, diencephalon and mesencephalon respectively. Results showed that (1) the N1 amplitudes evoked in the right telencephalon and right diencephalon of males by WN are significantly different from those evoked in females; (2) in males the N1 amplitudes evoked by conspecific calls are significantly different from those evoked by WN; (3) in females the N1 amplitude for the left mesencephalon was significantly lower than for other brain areas, while the P2 and P3 amplitudes for the right mesencephalon were the smallest; in contrast these amplitudes for the left mesencephalon were the smallest in males. These results suggest auditory perception is sexually dimorphic. Moreover, the amplitude of each ERP component (N1, P2 and P3) for the left telencephalon was the largest in females and/or males, suggesting that left telencephalic dominance exists for auditory perception in .
在能发声的动物中，发声和听觉处理方面的性别差异普遍存在，尽管与听觉处理性别二态性相关的潜在神经机制尚未完全明确。在本研究中，我们调查了在[具体动物]中听觉感知是否存在性别二态性。为此，我们分别测量了由白噪声（WN）和同种叫声在端脑、间脑和中脑诱发的事件相关电位（ERP）。结果表明：（1）雄性右端脑和右间脑由WN诱发的N1波幅与雌性有显著差异；（2）在雄性中，同种叫声诱发的N1波幅与WN诱发的有显著差异；（3）在雌性中，左中脑的N1波幅显著低于其他脑区，而右中脑的P2和P3波幅最小；相比之下，在雄性中左中脑的这些波幅最小。这些结果表明听觉感知存在性别二态性。此外，雌性和/或雄性左端脑的每个ERP成分（N1、P2和P3）的波幅最大，表明在[具体动物]中听觉感知存在左端脑优势。
