Audiograms of five species of rodents: implications for the evolution of hearing and the perception of pitch
Audiograms of five species of rodents: implications for the evolution of hearing and the perception of pitch
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DOI：
10.1016/s0378-5955(01)00298-2
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发表时间：
2001-07-01
期刊：
影响因子：
2.8
通讯作者：
Heffner, HE
中科院分区：
文献类型：
--
作者：
Heffner, RS;Koay, G;Heffner, HE
对五种啮齿类动物进行了行为听力图测定：土拨鼠（旱獭）、花栗鼠（花栗鼠）、达尔文叶鼠（达尔文鼠）、金黄仓鼠（金黄仓鼠）和埃及刺鼠（Acomys cahirinus）。这些动物的高频听力被发现与耳间距离成反比，这是典型的哺乳动物模式。关于低频听力，动物分为两组：低频听力延长的动物（花栗鼠，土拨鼠和仓鼠听到低于100 Hz）和低频听力受限的动物（多刺和叶耳小鼠听不到低于1 kHz的声音）。对哺乳动物听力的分析表明，低频听力极限的分布是双峰的，两个分布由125至500 Hz的间隙分开。这种二分法与时间编码研究的对应关系提出了一种可能性，即在500 Hz以下听不到声音的哺乳动物不使用时间编码来感知音高。(C)出版社：Elsevier Science B.V.
Behavioral audiograms were determined for five species of rodents: groundhog (Marmota monax), Chipmunk (Tamias striatus), Darwin's leaf-cared mouse (Phyllotis darwinii), golden hamster (Mesocricetus auratus), and Egyptian spiny mouse (Acomys cahirinus). The high-frequency hearing of these animals was found to vary inversely with interaural distance, a typical mammalian pattern. With regard to low-frequency hearing, the animals fell into two groups: those with extended low-frequency hearing (chipmunks, groundhogs, and hamsters hear below 100 Hz) and those with restricted low-frequency hearing (spiny and leaf-eared mice do not hear appreciably below 1 kHz). An analysis of mammalian hearing reveals that the distribution of low-frequency hearing limits is bimodal with the two distributions separated by a gap from 125 to 500 Hz. The correspondence of this dichotomy with studies of temporal coding raises the possibility that mammals that do not hear below 500 Hz do not use temporal encoding for the perception of pitch. (C) 2001 Published by Elsevier Science B.V.