Use of binaural cues for sound localization in two species of Phyllostomidae: the Greater spear-nosed bat (Phyllostomus hastatus) and the Short-tailed fruit bat (Carollia perspicillata).

Use of binaural cues for sound localization in two species of Phyllostomidae: the Greater spear-nosed bat (Phyllostomus hastatus) and the Short-tailed fruit bat (Carollia perspicillata).
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使用双耳线索对两种叶口蝠科物种进行声音定位:大矛鼻蝠(Phyllostomus hasstatus)和短尾果蝠(Carollia perspicillata)。

DOI:
10.1037/a0021154
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发表时间:
2010
期刊:
Journal of comparative psychology (Washington, D.C. : 1983)
影响因子:
--
通讯作者:
Heffner,HenryE
Heffner,HenryE
中科院分区:
--
文献类型:
--
作者:
Heffner,RickyeS;Koay,Gimseong;Heffner,HenryE

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与人类不同,并非所有哺乳动物都使用双耳线索进行声音定位。动物是否使用这些线索可以通过测试其定位纯音的能力来确定;具体来说,低频使用时间差线索定位,高频使用强度差线索定位。我们确定了使用双耳线索的能力,在2个新世界蝙蝠,Phyllostomus hastatus,大型杂食动物,和Atrilia perspicillata,小frugivores,通过测试他们的音调定位能力,使用条件回避程序。这两个物种都很容易定位高频音调,这表明它们可以使用耳间强度差异提示。然而,这两个物种都不能使用相位差线索来定位低频纯音或调幅音(这为额外的时间分析提供了包络)。我们现在知道有3种蝙蝠不能使用双耳时间线索,有2种可以。对蝙蝠定位的进一步探索可能会提供对听不到低频的物种的时间线索的神经分析的见解。
Unlike humans, not all mammals use both of the binaural cues for sound localization. Whether an animal uses these cues can be determined by testing its ability to localize pure tones; specifically, low frequencies are localized using time-difference cues, and high frequencies are localized using intensity-difference cues. We determined the ability to use binaural cues in 2 New World bats, Phyllostomus hastatus, large omnivores, and Carollia perspicillata, small frugivores, by testing their tone-localization ability using a conditioned avoidance procedure. Both species easily localized high-frequency tones, indicating that they could use the interaural intensity-difference cue. However, neither species was able to use the phase-difference cue to localize either low-frequency pure tones or amplitude-modulated tones (which provided an envelope for additional time analysis). We now know of 3 bat species that cannot use binaural time cues and 2 that can. Further exploration of localization in bats may provide insight into the neural analysis of time cues in species that do not hear low frequencies.
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