Rats emit unique distress calls in social inequality conditions

Rats emit unique distress calls in social inequality conditions
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老鼠在社会不平等条件下发出独特的求救信号

DOI:
10.1101/2022.02.22.481162
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发表时间:
2022
期刊:
bioRxiv
影响因子:
--
通讯作者:
Masahide Yoshida & Tatsushi Onaka
Masahide Yoshida & Tatsushi Onaka
中科院分区:
--
文献类型:
--
作者:
Shota Okabe;Yuki Takayanagi;Masahide Yoshida & Tatsushi Onaka

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人类对社会报酬的不平等表现出厌恶,这种厌恶对社会合作的建立起重要作用。然而,目前还不清楚常用的实验动物是否对社会奖励不平等表现出负面反应。在这项研究中,我们发现老鼠对一个反复抚摸老鼠的有亲和力的人表现出了类似债券的行为。此外,当一个有亲和力的人抚摸面前的另一只老鼠时,这些老鼠会发出痛苦的叫声,这是一种消极情绪的指标。这些求救信号的声学特征不同于那些响应物理压力刺激(如空气喷流)而发出的声音。在不平等条件下,大鼠发出的叫声的频率(28 kHz)和持续时间(0.05秒)比接受空气抽吸时发出的叫声的频率和持续时间更高。我们的研究结果表明,大鼠表现出消极情绪与独特的痛苦呼叫,以回应社会不平等的条件。
Humans show aversion toward inequality of social reward, and this aversion plays important roles for the establishment of social cooperation. However, it has remained unknown whether commonly used experimental animals show negative responses to social reward inequality. In this study, we found that rats showed bonding-like behavior to an affiliative human who repeatedly stroked the rats. In addition, these rats emitted distress calls, an index of negative emotion, when an affiliative human stroked another rat in front of them. These distress calls had acoustic characteristics different from those emitted in response to physical stress stimuli such as air-puff. Rats emitted calls with higher frequency (28 kHz) and shorter durations (0.05 sec) in an inequality condition than the frequency and durations of calls emitted when receiving air-puff. Our results suggested that rats exhibited negative emotion with unique distress calls in response to a social inequality condition.
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发表时间: 2011-05-01
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