Primate auditory recognition memory performance varies with sound type.
Primate auditory recognition memory performance varies with sound type.
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DOI：
10.1016/j.heares.2009.06.014
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发表时间：
2009-10
期刊：
影响因子：
2.8
通讯作者：
Poremba, Amy
中科院分区：
文献类型：
--
作者：
Ng, Chi-Wing;Plakke, Bethany;Poremba, Amy
听觉处理的神经关联，包括传达生物学和行为学意义（如社会地位、亲属关系、环境）的物种特异性发声，已经在包括颞叶和额叶皮质在内的各种区域被发现。然而，很少有研究阐明非人类灵长类动物在面对需要听觉辨别、识别和/或记忆的任务时如何与这些发声信号相互作用。本研究采用听觉刺激的延迟样本匹配任务来检测恒河猴（Macaca mulatta）的听觉记忆表现，其中两种声音被确定为相同或不同。恒河猴似乎对听觉刺激的短期记忆相对较差，我们研究了特定的声音类型是否更有利于记忆表现。实验1表明，使用发声声音类型（尤其是猴子）的记忆表现明显优于使用非发声声音类型的记忆，而且雄性猴子的整体表现优于雌性猴子。实验2控制了声音样本的数量和不同类型的呈现配对，重复了实验1，根据不同的试验类型，对特定物种的猴子发声表现出更好的表现或更短的反应延迟。这一发现不能用猴子发声和其他声音类型之间的声学差异来解释，这表明这些声音的生物学和/或行为学意义对听觉记忆更有效。
Neural correlates of auditory processing, including for species-specific vocalizations that convey biological and ethological significance (e.g. social status, kinship, environment),have been identified in a wide variety of areas including the temporal and frontal cortices. However, few studies elucidate how non-human primates interact with these vocalization signals when they are challenged by tasks requiring auditory discrimination, recognition, and/or memory. The present study employs a delayed matching-to-sample task with auditory stimuli to examine auditory memory performance of rhesus macaques (Macaca mulatta), wherein two sounds are determined to be the same or different. Rhesus macaques seem to have relatively poor short-term memory with auditory stimuli, and we examine if particular sound types are more favorable for memory performance. Experiment 1 suggests memory performance with vocalization sound types (particularly monkey), are significantly better than when using non-vocalization sound types, and male monkeys outperform female monkeys overall. Experiment 2, controlling for number of sound exemplars and presentation pairings across types, replicates Experiment 1, demonstrating better performance or decreased response latencies, depending on trial type, to species-specific monkey vocalizations. The findings cannot be explained by acoustic differences between monkey vocalizations and the other sound types, suggesting the biological, and/or ethological meaning of these sounds are more effective for auditory memory.
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