Cognition and Philosophy Laboratory, Monash University, Room E672, 20 Chancellors Walk, Clayton, VIC 3800, Australia.
Baker Heart and Diabetes Institute, Level 4, 99 Commercial Road, Melbourne, VIC 3004, Australia.
Psychon Bull Rev. 2021 Aug;28(4):1211-1223. doi: 10.3758/s13423-021-01888-y. Epub 2021 Mar 23.
Decreased heart rate (HR) and variability (HRV) are well-established correlates of attention; however, the functional significance of these dynamics remains unclear. Here, we investigate whether attention-related cardiac modulation is sensitive to different varieties of uncertainty. Thirty-nine adults performed a binocular rivalry-replay task in which changes in visual perception were driven either internally (in response to constant, conflicting stimuli; rivalry) or externally (in response to physically alternating stimuli; replay). Tonic HR and high-frequency HRV linearly decreased as participants progressed from resting-state baseline (minimal visual uncertainty) through replay (temporal uncertainty) to rivalry (temporal uncertainty and ambiguity). Time-resolved frequency estimates revealed that cardiac deceleration was sustained throughout the trial period and modulated by ambiguity, novelty, and switch rate. These findings suggest cardiac regulation during active attention may play an instrumental role in uncertainty reduction.
心率（HR）和变异性（HRV）降低是注意力的既定相关因素；然而，这些动态的功能意义尚不清楚。在这里，我们研究了与注意力相关的心脏调节是否对不同种类的不确定性敏感。39 名成年人进行了双眼竞争回放任务，其中视觉感知的变化是由内部（响应恒定、冲突的刺激；竞争）还是外部（响应物理交替刺激；回放）驱动的。在参与者从休息状态基线（最小视觉不确定性）通过回放（时间不确定性）到竞争（时间不确定性和模糊性）的过程中，静息心率和高频心率变异性呈线性下降。时分辨率频率估计显示，心脏减速在整个试验期间持续，并受模糊性、新奇性和切换率调节。这些发现表明，主动注意期间的心脏调节可能在减少不确定性方面发挥重要作用。
