Fainstein Facundo, Goller Franz, Mindlin Gabriel B
Facultad de Ciencias Exactas y Naturales, Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina.
Instituto de Física Interdisciplinaria y Aplicada (INFINA), CONICET - Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, 1428, Argentina.
J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2025 Mar;211(2):135-148. doi: 10.1007/s00359-024-01720-7. Epub 2024 Oct 15.
Sleep replay activity involves the reactivation of brain structures with patterns similar to those observed during waking behavior. In this study, we demonstrate that adult male canaries exhibit spontaneous, song-like peripheral reactivation during night sleep. Our findings include: (1) the presence of activity in respiratory muscles, leading to song-like air sac pressure patterns of low amplitude, (2) the simultaneous occurrence of respiratory replay events and reactivation of syringeal muscles, and (3) the reactivation of syringeal muscles without concurrent respiratory system activity. This song-like reactivation of peripheral motor systems enables the identification of specific motor patterns, with replay events preserving individual morphological and temporal properties. The activation of peripheral motor systems in songbirds and the differences in activation patterns between species give unique insights into the fictive behavioral output of activation of a complex learned motor behavior during sleep, shedding light on the neural control mechanisms and potential functions.
睡眠重演活动涉及大脑结构的重新激活，其模式类似于清醒行为期间观察到的模式。在本研究中，我们证明成年雄性金丝雀在夜间睡眠期间表现出自发性的、类似鸣叫的外周重新激活。我们的发现包括：（1）呼吸肌活动的存在，导致低振幅的类似鸣叫的气囊压力模式；（2）呼吸重演事件与鸣管肌重新激活同时发生；（3）鸣管肌重新激活而无并发呼吸系统活动。外周运动系统的这种类似鸣叫的重新激活能够识别特定的运动模式，重演事件保留了个体形态和时间特性。鸣禽外周运动系统的激活以及物种间激活模式的差异，为睡眠期间复杂学习运动行为激活的虚构行为输出提供了独特见解，有助于揭示神经控制机制和潜在功能。
