Cervids with different vocal behavior demonstrate different viscoelastic properties of their vocal folds.
Cervids with different vocal behavior demonstrate different viscoelastic properties of their vocal folds.
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DOI：
10.1002/jmor.10774
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发表时间：
2010-01
影响因子：
1.5
通讯作者：
Titze, Ingo R.
中科院分区：
文献类型：
--
作者：
Riede, Tobias;Lingle, Susan;Hunter, Eric J.;Titze, Ingo R.
关键词：
作者测试了声带形态和生物力学特性随物种特定发声功能而变化的假设。他们研究了骡鹿(Odocoileus Hemion Us)的声带，建立并扩展了另一种相关鹿科动物落基山脉麋鹿(Cervus Elaffus Nelsoni)的数据。与麋鹿不同，骡鹿是成年动物中发声活动相对较少的物种。马鹿和麋鹿的声带显示了哺乳动物声带的三个典型组成部分(上皮、固有层和甲状旁肌)。在两组拉伸试验中观察了声带上皮和固有层。首先，蠕变断裂试验表明，马鹿固有层的极限应力与麋鹿的极限应力大小相同。第二，循环加载试验显示，马鹿和麋鹿的声带上皮具有相似的弹性系数。在低应变区，两种动物固有层的弹性模量也相似，但在应变大于0.3时有所不同。据报道，麋鹿和人的声带在压力-应变反应方面存在性别差异，而骡鹿的声带则没有发现性别差异。马鹿和麋鹿的声带固有层较大。一般来说，即使施加高声门下压，厚而均匀僵硬的固有层也不能很好地自振。如果在麋鹿身上看到的不那么僵硬的声带与分化的固有层有关，它将允许声带在高张力和高声门下压力下振动。本研究结果支持声带粘弹性特性随功能和发声行为不同而不同的假设。
The authors test the hypothesis that vocal fold morphology and biomechanical properties covary with species-specific vocal function. They investigate mule deer (Odocoileus hemionus) vocal folds, building on, and extending data on a related cervid, the Rocky Mountain elk (Cervus elaphus nelsoni). The mule deer, in contrast to the elk, is a species with relatively little vocal activity in adult animals. Mule deer and elk vocal folds show the typical three components of the mammalian vocal fold (epithelium, lamina propria and thyroarytenoid muscle). The vocal fold epithelium and the lamina propria were investigated in two sets of tensile tests. First, creep rupture tests demonstrated that ultimate stress in mule deer lamina propria is of the same magnitude as in elk. Second, cyclic loading tests revealed similar elastic moduli for the vocal fold epithelium in mule deer and elk. The elastic modulus of the lamina propria is also similar between the two species in the low-strain region, but differs at strains larger than 0.3. Sex differences in the stress–strain response, which have been reported for elk and human vocal folds, were not found for mule deer vocal folds. The laminae propriae in mule deer and elk vocal folds are comparatively large. In general, a thick and uniformly stiff lamina propria does not self-oscillate well, even when high subglottic pressure is applied. If the less stiff vocal fold seen in elk is associated with a differentiated lamina propria it would allow the vocal fold to vibrate at high tension and high subglottic pressure. The results of this study support the hypothesis that viscoelastic properties of vocal folds varies with function and vocal behavior.
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影响因子：
3.8
作者：
Chan, RW;Titze, IR
通讯作者：
Titze, IR
DOI：
10.2307/1377372
发表时间：
1961-01-01
期刊：
JOUR MAMMAL
影响因子：
--
作者：
COWAN, I. M.;GEIST, VALERIUS
通讯作者：
GEIST, VALERIUS
影响因子：
1.4
作者：
Hahn, MS;Kobler, JB;Langer, R
通讯作者：
Langer, R
影响因子：
1.9
作者：
Hirpara, Kieran M.;Sullivan, Paulj.;O'Sullivan, Michael E.
通讯作者：
O'Sullivan, Michael E.
影响因子：
2.2
作者：
Hunter, Eric J.;Alipour, Fariborz;Titze, Ingo R.
通讯作者：
Titze, Ingo R.