Laryngeal biomechanics and vocal communication in the squirrel monkey (Saimiri boliviensis)
Laryngeal biomechanics and vocal communication in the squirrel monkey (Saimiri boliviensis)
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DOI：
10.1121/1.1528930
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发表时间：
2003-04-01
影响因子：
2.4
通讯作者：
Montequin, D
中科院分区：
文献类型：
--
作者：
Brown, CH;Alipour, F;Montequin, D
8只松鼠猴子的喉部被采集，解剖，安装在假性气管管上，并使用压缩空气发声。声带摆动模式与声音模式进行比较。从我们蜂群里的猴子那里录下的通话光谱图。确定了四种不同的声带激活模式。音域1类似于典型的人类元音发音，具有规则的声带振动、突出的基频和伴随的一系列和声泛音。这一制度很可能会引起松鼠猴的“咯咯”叫声，以及其他各种和谐结构的叫声。在区域2中，振动模式显示存在两个或两个以上不相关的频率(双音)。这种声门活动机制类似于在许多“twitter”和“kecker”叫声中观察到的双声。声带在摆动。持续在模式3中，但产生声门脉冲，其幅度有节奏地增减。这种现象导致了对一系列离散脉冲的感知，并可能产生。到“错误”、“搅局”和其他由一系列快速声学元素组成的叫声。在区域4中，每个振荡的周期都是准不规则的。尖叫声和其他缺乏明显基频的宽带呼叫或呼叫元素可能以这种方式产生。(C)2003年美国声学学会。
The larynges of eight squirrel monkeys were harvested, dissected, mounted on a pseudotracheal tube, and phonated using compressed air. Patterns of vocal fold oscillation were compared with sound. spectrograms of calls recorded, from monkeys in our colony. Four different regimes of vocal fold activation were identified. Regime 1 resembled typical human vowel production, with regular vocal-fold vibration, a prominent fundamental frequency, and an accompanying series of harmonic overtones. This regime is likely to give rise to squirrel monkey "cackles," as well as a variety of other harmonically structured calls. In regime 2, the pattern of vibrations exhibited the presence of two or more unrelated frequencies (biphonation). This regime of glottal activity resembled the biphonation observed in many exemplars of "twitter" and "kecker" calls. The vocal folds oscillated. continuously in regime 3, but produced glottal pulses whose amplitudes waxed and waned rhythmically. This phenomenon resulted in the percept of a series of discrete pulses, and may give rise. to "errs," "churrs," and other calls composed of a rapid sequence of acoustic elements. In regime 4, the period of each oscillation was quasi-irregular. Shrieks and other broadband calls or call elements that lack an apparent fundamental frequency may-be produced in this manner. (C) 2003 Acoustical Society of America.