Laterality in Responses to Acoustic Stimuli in Giant Pandas.
Laterality in Responses to Acoustic Stimuli in Giant Pandas.
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DOI：
10.3390/ani11030774
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发表时间：
2021-03-11
期刊：
影响因子：
--
通讯作者：
Fang G
中科院分区：
文献类型：
--
作者：
Liu H;Tang Y;Ni Y;Fang G
听觉系统的功能侧化已被广泛研究。因此，在许多脊椎动物中都观察到受声刺激影响的行为侧向反应。在这项研究中，我们评估了大熊猫对不同声音刺激的行为反应，以检查大脑偏侧化。我们得出的结论是，成年大熊猫对积极的声音刺激表现出左半球偏向。此外，我们发现了不同类别的声刺激的大脑偏侧化的特定效价，其中一些与偏侧化相关，而另一些则不相关。我们的研究结果支持了一种进化策略，即大熊猫处理听觉信号的方式与其他哺乳动物类似。大脑偏侧化是许多脊椎动物存在的共同特征，并且经常在对各种感觉刺激的反应中观察到。许多研究提出，一些脊椎动物物种在响应特定类型的声刺激时具有右半球或左半球优势。我们通过使用头部转动范式和具有不同情绪效价的二十八种声学刺激，其中包括二十四种同种和四种非同种声学刺激（白噪声、雷声和捕食者的发声），研究了八只大熊猫（Ailuropoda melanoleuca）的偏侧化。对同种或非同种声音的反应的听觉偏侧性没有显着差异。然而，左大脑半球处理积极刺激，而两个半球都没有表现出处理消极刺激的偏好。此外，右半球处理情绪刺激和同种刺激的速度比左半球更快。这些发现表明，大熊猫对不同的声音刺激表现出偏侧化，这提供了该物种半球不对称的证据。
Functional lateralization in the auditory system has been widely studied. Accordingly, behavioral laterality responses affected by acoustic stimuli have been observed in many vertebrate species. In this study, we assessed giant pandas’ behavioral responses to different acoustic stimuli in order to examine cerebral lateralization. We concluded that adult giant pandas showed a left-hemisphere bias in response to positive acoustic stimuli. Furthermore, we found the specific valence of cerebral lateralization for different categories of acoustic stimuli, of which some were relevant to the lateralization while others were not relevant. Our findings support an evolutionary strategy that giant pandas process auditory signals similar to other mammals. Cerebral lateralization is a common feature present in many vertebrates and is often observed in response to various sensory stimuli. Numerous studies have proposed that some vertebrate species have a right hemisphere or left hemisphere dominance in response to specific types of acoustic stimuli. We investigated lateralization of eight giant pandas (Ailuropoda melanoleuca) by using a head turning paradigm and twenty-eight acoustic stimuli with different emotional valences which included twenty-four conspecific and four non-conspecific acoustic stimuli (white noise, thunder, and vocalization of a predator). There was no significant difference in auditory laterality in responses to conspecific or non-conspecific sounds. However, the left cerebral hemisphere processed the positive stimuli, whereas neither of the two hemispheres exhibited a preference for processing the negative stimuli. Furthermore, the right hemisphere was faster than the left hemisphere in processing emotional stimuli and conspecific stimuli. These findings demonstrate that giant pandas exhibit lateralization in response to different acoustic stimuli, which provides evidence of hemispheric asymmetry in this species.
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影响因子：
2.7
作者：
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通讯作者：
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