Vocal development in squirrel monkeys
Vocal development in squirrel monkeys
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DOI：
10.1163/156853901753287190
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发表时间：
2001-09-01
期刊：
影响因子：
1.3
通讯作者：
Jürgens, U
中科院分区：
文献类型：
--
作者：
Hammerschmidt, K;Freudenstein, T;Jürgens, U
用多参数声学分析方法研究了6只松鼠猴（Saimiri sciureus）在出生后20个月内的发声发育。其中4只动物正常饲养，1只动物（Kaspar Hauser）被剥夺了成年物种特异性叫声，1只动物先天性耳聋。研究表明，在所有12种研究中的呼叫类型中，一个或另一个声学参数发生了与年龄相关的变化。发声结构的变化程度，是呼叫类型的具体，与一些电话显示戏剧性的变化和其他人只显示微小的变化。大多数变化发生在头四个月内，有些持续了10个月。在整个20个月的研究期间，所有呼叫类型均显示出较高的变异性。12种呼叫类型中只有实时呼叫显示出随时间变化的减少。这两个声学剥夺的动物保持在正常饲养的动物的变异范围内，这表明发现的个体发育变化主要是成熟的。
Six squirrel monkeys (Saimiri sciureus) were studied for their vocal development over the first 20 months of life, using a multi-parametric acoustic analysis. Four of the animals were normally raised, one animal (Kaspar Hauser') was deprived of adult species-specific calls, one animal was congenitally deaf. The study showed that in all 12 call types under investigation, age-related changes in one or the other acoustic parameter occurred. The degree to which vocal structures changed, was call type-specific, with some calls showing dramatic changes and others showing only minor changes. Most changes occurred within the first four months; some lasted up to 10 months. All call types showed a high variability throughout the 20 months study period. Only live of the 12 call types showed a reduction in variability over time. Both acoustically deprived animals remained within the variability range of the normally raised animals, suggesting that the ontogenetic changes found were mainly maturational.