Resting respiratory sinus arrhythmia (RSA) is related to individual differences in waking affective style and self-regulation. However, little is known about the stability of RSA between sleep/wake stages or the relations between RSA during sleep and waking affective style. We examined resting RSA in 25 healthy undergraduates during the waking state and one night of sleep. Stability of cardiac variables across sleep/wake states was highly reliable within participants. As predicted, greater approach behavior and lower impulsivity were associated with higher RSA; these relations were evident in early night Non-REM (NREM) sleep, particularly in slow wave sleep (SWS). The current research extends previous findings by establishing stability of RSA within individuals between wake and sleep states, and by identifying SWS as an optimal period of measurement for relations between waking affective style and RSA.

中文翻译：

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睡眠和清醒期间呼吸性窦性心律不齐

呼吸性窦性心律不齐（RSA）与唤醒情感风格和自我调节的个体差异有关。然而，关于RSA在睡眠/觉醒阶段之间的稳定性或RSA在睡眠与唤醒情感风格之间的关系知之甚少。我们在清醒状态和一夜睡眠中检查了25名健康大学生的静息RSA。在参与者中，跨睡眠/唤醒状态的心脏变量的稳定性高度可靠。如预测的那样，更高的进近行为和更低的冲动与更高的RSA相关；这些关系在夜间非快速眼动（NREM）睡眠中很明显，尤其是在慢波睡眠（SWS）中。当前的研究通过建立个人在唤醒和睡眠状态之间的RSA稳定性来扩展先前的发现，