仙琴蛙广告鸣叫中不同音节生物学意义的差异研究
发布时间：2018-11-23 11:19
【摘要】：声音通讯对发声动物的生存和繁殖起着重要作用。但动物鸣声在时域上不同组成部分的生物学意义差异尚无定论。无尾两栖类的鸣声一般由音节和间隔组成,如雄性仙琴蛙Babina daunchina的广告鸣叫由一至十余个音节及持续时间约为150 ms的间隔组成,这为研究不同音节生物学意义的差异提供了便利。本研究采用优化的失匹配负波(MMN)范式,在播放标准刺激(白噪声)和偏差刺激(同一个广告鸣叫的5个音节)时,采集脑电信号,经过叠加平均后得到MMN。结果显示,第一个音节对应的MMN幅度最高,而且具有大脑左侧优势。由于MMN幅度表征刺激与记忆痕迹之间的差异,同时反映投入的大脑资源,据此推测第一个音节在蛙类声音通讯中起至关重要的作用。
[Abstract]:Sound communication plays an important role in the survival and reproduction of vocal animals. However, the biological significance of different components of animal song in time domain has not been decided. The acoustics of amphibians generally consist of syllables and intervals, such as one to ten syllables and an interval of about 150 ms, which is convenient for the study of the biological significance of different syllables. In this study, the optimized mismatched negative-wave (MMN) paradigm was adopted. When the standard stimulus (white noise) and the bias stimulus (5 syllables of the same advertisement) were played, the EEG signals were collected, and the MMN. was obtained after the superposition average. The results show that the first syllable corresponds to the highest amplitude of MMN and has the advantage of left side of brain. Because the amplitude of MMN represents the difference between stimuli and memory traces, and reflects the input of brain resources, it is inferred that the first syllable plays an important role in frog sound communication.
【作者单位】： 中国科学院成都生物研究所;中国科学院大学;
【基金】：国家自然科学基金项目(31672305;31372217)
【分类号】：Q62
，
本文编号：2351402
[Abstract]:Sound communication plays an important role in the survival and reproduction of vocal animals. However, the biological significance of different components of animal song in time domain has not been decided. The acoustics of amphibians generally consist of syllables and intervals, such as one to ten syllables and an interval of about 150 ms, which is convenient for the study of the biological significance of different syllables. In this study, the optimized mismatched negative-wave (MMN) paradigm was adopted. When the standard stimulus (white noise) and the bias stimulus (5 syllables of the same advertisement) were played, the EEG signals were collected, and the MMN. was obtained after the superposition average. The results show that the first syllable corresponds to the highest amplitude of MMN and has the advantage of left side of brain. Because the amplitude of MMN represents the difference between stimuli and memory traces, and reflects the input of brain resources, it is inferred that the first syllable plays an important role in frog sound communication.
【作者单位】： 中国科学院成都生物研究所;中国科学院大学;
【基金】：国家自然科学基金项目(31672305;31372217)
【分类号】：Q62
，
本文编号：2351402
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