刺激家鸽中脑丘间复合体背内侧核诱发叫声与其自鸣声的比较  

A comparison between evoked coo by stimulating DM nucleus and spontaneous coo in pigeons

作　　者：耿慧[1] 李东风[1] 蒋锦昌[2] 

机构地区：[1]华南师范大学生命科学学院,广州510631 [2]中国科学院生物物理研究所脑与认知科学国家重点实验室,北京100101

出　　处：《动物学报》2006年第1期99-108,共10页ACTA ZOOLOGICA SINICA

基　　金：国家自然科学基金(No.30370197;30570232);广东省自然科学基金(No.05005910);中国科学院生物物理研究所脑与认知科学国家重点实验室资助项目~~

摘　　要：利用计算机声谱分析技术比较了家鸽刺激中脑丘间复合体背内侧核(DM)诱发叫声和其正常自鸣声。家鸽的单次自鸣声“di·Gu—”,包括前奏、高潮声和尾声,其主频率和相对幅值都呈明显的逐步递增、平稳和逐步下降过程。高潮声平稳期的载波主频率(318Hz)所表征的主音调比前奏和尾声的主频率(239Hz)分别平均高4.9个半音,相对幅值分别平均高24.4dB和13.2dB,品质因数(Q6dB)分别增高1.8倍和2.8倍。随着刺激电压的增大和减小,家鸽单次鸣声持续时间呈显著的线性递减和递增。诱发叫声的主频率显著性低于自鸣声,声图中有1-2个陪音。The spontaneous coo with the coo evoked by stimulating DM nucleus in pigeon was compared by using computer-aided spectrogram analysis. The principal frequency （PF） and relative amplitude （RA） of the single coo ＂di·Gu- ＂, including prelude, loud song and coda, were distinctly increased, calm and decreased gradually. The principal tone represented by the carry PF of steady period in loud song was 4.9 semitone higher than that of preclude and coda, whereas the RA of loud song was 24.4 dB, 13.2 dB higher than that of preclude and coda, respectively. The carry Q6dB of loud song was 1.8, 2.8 times higher than that of prelude and coda, respectively. With increase and decrease of the stimulating voltage, duration of single coo represent the distinct linear change. The PF of evoked coo was lower than that of spontaneous coo obviously; one or two upper partials were appeared in the spectrogram. The experiment provided some acoustic evidences to clarify the modulation mechanism of vocalization in non-songbirds [ Acta Zoologica Sinica 52 （l）： 99- 108, 2006].

关 键 词：家鸽 中脑丘间复合体背内侧核 诱发叫声 自鸣声 

分 类 号：Q43[生物学—生理学]