【摘要】：聲音通訊對發(fā)聲動物的生存和繁殖起著重要作用。但動物鳴聲在時域上不同組成部分的生物學(xué)意義差異尚無定論。無尾兩棲類的鳴聲一般由音節(jié)和間隔組成,如雄性仙琴蛙Babina daunchina的廣告鳴叫由一至十余個音節(jié)及持續(xù)時間約為150 ms的間隔組成,這為研究不同音節(jié)生物學(xué)意義的差異提供了便利。本研究采用優(yōu)化的失匹配負波(MMN)范式,在播放標準刺激(白噪聲)和偏差刺激(同一個廣告鳴叫的5個音節(jié))時,采集腦電信號,經(jīng)過疊加平均后得到MMN。結(jié)果顯示,第一個音節(jié)對應(yīng)的MMN幅度最高,而且具有大腦左側(cè)優(yōu)勢。由于MMN幅度表征刺激與記憶痕跡之間的差異,同時反映投入的大腦資源,據(jù)此推測第一個音節(jié)在蛙類聲音通訊中起至關(guān)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.
【作者單位】： 中國科學(xué)院成都生物研究所;中國科學(xué)院大學(xué);
【基金】：國家自然科學(xué)基金項目(31672305;31372217)
【分類號】：Q62
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本文編號：2351402