Perception of individuality in bat vocal communication: discrimination between, or recognition of, interaction partners?
Perception of individuality in bat vocal communication: discrimination between, or recognition of, interaction partners?
复制标题
DOI：
10.1007/s10071-013-0628-9
复制
发表时间：
2013-11-01
期刊：
影响因子：
2.7
通讯作者：
Schmidt, Sabine
中科院分区：
文献类型：
--
作者：
Kastein, Hanna B.;Winter, Rebecca;Schmidt, Sabine
人类声音身份感知的不同认知过程可能在哺乳动物中也有先兆。蝙蝠包括生活在复杂社会结构中的物种，它们是夜间活动、快速移动的哺乳动物，对声音特征的感知可能支配着蝙蝠的个性化互动。本文调查了蝙蝠在多大程度上识别和区分个体的声音，并讨论了与完成这些任务相关的声学特征。在自发呈现和习惯化-去习惯化实验中，我们研究了Megaderma lyra如何感知和评估由来自社会伙伴或未知个体的具有个人特定签名的联系呼叫序列组成的刺激。社交伙伴或不知名的人自发地发出联系电话刺激，会引起强烈但类似的反应。在习服-去习服实验中，蝙蝠对任何新的刺激都会显著地去习服。然而，无论是否熟悉，对蝙蝠用于适应的新刺激的反应没有对其他蝙蝠的刺激明显，这为身份歧视提供了证据。一个单独评估刺激在音节频率、音节持续时间和通话间隔中与学习的记忆模板相关的差异的模型解释了蝙蝠的行为。关于身份再认，自发的呈现实验并不是决定性的。然而，习惯化-去习服实验表明，蝙蝠识别社会伴侣的声音，因为在来自社会伴侣和未知蝙蝠的去习服刺激后，蝙蝠对重新习服刺激的反应不同。
Different cognitive processes underlying voice identity perception in humans may have precursors in mammals. A perception of vocal signatures may govern individualised interactions in bats, which comprise species living in complex social structures and are nocturnal, fast-moving mammals. This paper investigates to what extent bats recognise, and discriminate between, individual voices and discusses acoustic features relevant for accomplishing these tasks. In spontaneous presentation and habituation-dishabituation experiments, we investigated how Megaderma lyra perceives and evaluates stimuli consisting of contact call series with individual-specific signatures from either social partners or unknown individuals. Spontaneous presentations of contact call stimuli from social partners or unknown individuals elicited strong, but comparable reactions. In the habituation-dishabituation experiments, bats dishabituated significantly to any new stimulus. However, reactions were less pronounced to a novel stimulus from the bat used for habituation than to stimuli from other bats, irrespective of familiarity, which provides evidence for identity discrimination. A model separately assessing the dissimilarity of stimuli in syllable frequencies, syllable durations and inter-call intervals relative to learned memory templates accounted for the behaviour of the bats. With respect to identity recognition, the spontaneous presentation experiments were not conclusive. However, the habituation-dishabituation experiments suggested that the bats recognised voices of social partners as the reaction to a re-habituation stimulus differed after a dishabituation stimulus from a social partner and an unknown bat.