Department of Psychology, University of North Carolina at Chapel Hill, Chapel Hill, NC United States.
Biol Psychol. 2010 Dec;85(3):432-6. doi: 10.1016/j.biopsycho.2010.09.005. Epub 2010 Sep 22.
Vagal tone (VT), an index of autonomic flexibility, is linked to social and psychological well-being. We posit that the association between VT and well-being reflects an "upward spiral" in which autonomic flexibility, represented by VT, facilitates capitalizing on social and emotional opportunities and the resulting opportunistic gains, in turn, lead to higher VT. Community-dwelling adults were asked to monitor and report their positive emotions and the degree to which they felt socially connected each day for 9 weeks. VT was measured at the beginning and end of the 9-week period. Adults who possessed higher initial levels of VT increased in connectedness and positive emotions more rapidly than others. Furthermore, increases in connectedness and positive emotions predicted increases in VT, independent of initial VT level. This evidence is consistent with an "upward spiral" relationship of reciprocal causality, in which VT and psychosocial well-being reciprocally and prospectively predict one another.
迷走神经张力（VT）是自主灵活性的指标，与社会和心理幸福感相关。我们假设 VT 与幸福感之间的关联反映了一种“上升螺旋”，即自主灵活性（以 VT 表示）有助于利用社交和情感机会，而由此产生的机会收益反过来又导致更高的 VT。我们要求社区居住的成年人每天监测并报告他们的积极情绪以及他们感到社交联系的程度，为期 9 周。在 9 周期间的开始和结束时测量 VT。与其他人相比，初始 VT 水平较高的成年人在联系感和积极情绪方面的增加速度更快。此外，联系感和积极情绪的增加预测了 VT 的增加，而与初始 VT 水平无关。这一证据与互惠因果关系的“上升螺旋”关系一致，其中 VT 和心理社会幸福感相互且前瞻性地预测彼此。
