Natural Changes in Brain Temperature Underlie Variations in Song Tempo during a Mating Behavior
Natural Changes in Brain Temperature Underlie Variations in Song Tempo during a Mating Behavior
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DOI：
10.1371/journal.pone.0047856
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发表时间：
2012-10-24
期刊：
影响因子：
3.7
通讯作者：
Fee, Michale S.
中科院分区：
文献类型：
--
作者：
Aronov, Dmitriy;Fee, Michale S.
雄性斑胸草雀的歌声是一种固定的运动序列，其克里思随着社会背景而变化--无论歌声是否针对雌性鸟--以及一天中的时间。这些克里思变化背后的神经机制尚不清楚。在这里，我们表明，大脑温度记录在自由行为的雄性雀类表现出全球性的增加，以响应介绍一只雌鸟。这一增长与针对女性的歌曲比在社会隔离中产生的歌曲克里思更快密切相关，并在很大程度上解释了这一点。此外，我们发现，观察到的歌曲克里思的昼夜变化也解释了大脑温度的自然变化。我们的研究结果表明，大脑温度是一个重要的变量，可以影响神经回路中活动的动态，以及其中一些回路产生的行为的时间特征。
The song of a male zebra finch is a stereotyped motor sequence whose tempo varies with social context - whether or not the song is directed at a female bird - as well as with the time of day. The neural mechanisms underlying these changes in tempo are unknown. Here we show that brain temperature recorded in freely behaving male finches exhibits a global increase in response to the presentation of a female bird. This increase strongly correlates with, and largely explains, the faster tempo of songs directed at a female compared to songs produced in social isolation. Furthermore, we find that the observed diurnal variations in song tempo are also explained by natural variations in brain temperature. Our findings suggest that brain temperature is an important variable that can influence the dynamics of activity in neural circuits, as well as the temporal features of behaviors that some of these circuits generate.