Abstract The Neurovisceral Integration Model posits a link between resting vagally mediated
heart rate variability (vmHRV) and cognitive control. Empirical support for this link is mixed,
potentially due to coarse performance metrics such as mean response time (RT). To clarify
this issue, we tested the relationships between resting vmHRV and refined estimates of
cognitive control-as revealed by the ex-Gaussian model of RT and, to a greater extent, the
drift diffusion model (DDM, a computational model of two-choice performance). Participants …