Affect cues in vocalizations of the bat, Megaderma lyra, during agonistic interactions
Affect cues in vocalizations of the bat, Megaderma lyra, during agonistic interactions
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DOI：
10.1121/1.2924123
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发表时间：
2008-07-01
影响因子：
2.4
通讯作者：
Schmidt, Sabine
中科院分区：
文献类型：
--
作者：
Bastian, Anna;Schmidt, Sabine
人类言语中的情感韵律的某些特征可以追溯到哺乳动物发声中的情感线索。本研究解决了这样一个问题：情感强度，即行为表现的强度，是否编码在声音线索中，即，蝙蝠的相关叫声结构的变化，蝙蝠是一个在进化上远离灵长类动物的群体。一帧一帧的视频分析109二进激动的相互作用记录在方法的情况下进行分类显示成两个强度水平的基础上的成本效益估计。M.天琴座表现出分级的视觉显示，伴随着第二只蝙蝠的特定叫声和回应叫声。声音分析揭示了系统的变化与显示水平的调用序列参数。在高强度水平，总呼叫持续时间，在一个呼叫的音节数，和一个序列内的呼叫数增加，而呼叫音节之间的间隔减少两种呼叫类型。此外，反应叫声的潜伏期缩短，其主音节类型的持续时间和基频增加。这些系统的变化与影响强度的声音参数对应于人类语音的韵律变化，这表明情感相关的声学线索是一个共同的特点，在哺乳动物的声音通信。(C)2008年，美国声学学会。
Some features of emotional prosody in human speech may be traced back to affect cues in mammalian vocalizations. The present study addresses the question whether affect intensity, as expressed by the intensity of behavioral displays, is encoded in vocal cues, i.e., changes in the structure of associated calls, in bats, a group evolutionarily remote from primates. A frame-by-frame video analysis of 109 dyadic agonistic interactions recorded in approach situations was performed to categorize displays into two intensity levels based on a cost-benefit estimate. M. lyra showed graded visual displays accompanied by specific calls and response calls of the second bat. A sound analysis revealed systematic changes of call sequence parameters with display level. At the high intensity level, total call duration, number of syllables within a call, and the number of calls within a sequence were increased, while intervals between call syllables were decreased for both call types. In addition, the latency of the response call was shorter, and its main syllable-type durations and fundamental frequency were increased. These systematic changes of vocal parameters with affect intensity correspond to prosodic changes in human speech, suggesting that emotion-related acoustic cues are a common feature of vocal communication in mammals. (C) 2008 Acoustical Society of America.