Laboratory of Brain Imaging, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland; Lab of Action & Body, Department of Psychology, Royal Holloway, University of London, UK.
Lab of Action & Body, Department of Psychology, Royal Holloway, University of London, UK; The Warburg Institute, School of Advanced Study, University of London, UK; Department of Behavioural and Cognitive Sciences, Faculty of Humanities, Education and Social Sciences, University of Luxembourg, Luxembourg.
Int J Psychophysiol. 2021 Apr;162:104-111. doi: 10.1016/j.ijpsycho.2021.02.010. Epub 2021 Feb 11.
A growing body of research suggests that perception and cognition are affected by fluctuating bodily states. For example, the rate of information sampling is coupled with cardiac phases. However, the benefits of such spontaneous coupling between bodily oscillations and decision-making remains unclear. Here, we studied the role of the cardiac cycle in information sampling by testing whether sequential information sampling phase-locked to systolic or diastolic parts of the cardiac cycle impacts the rate of information gathering and processing. To this aim, we employed a modified Information Sampling Task, a standard measure of the rate of information gathering before reaching a decision, in which the onset of new information delivery in each trial was coupled either to cardiac systole or diastole. Information presented within cardiac systole did not significantly modulate the information processing in a manner that would produce clear behavioral changes. However, we found evidence suggesting that higher interoceptive awareness increased accuracy, especially in the costly version of the task, when new information was sequentially presented at systole. Overall, our results add to a growing body of research on body-brain interactions and suggest that our internal bodily rhythms (i.e., heartbeats) and our awareness of them can interact with the way we process the noisy world around us.
越来越多的研究表明，感知和认知会受到身体状态波动的影响。例如，信息采样的速度与心脏相位有关。然而，身体振荡和决策之间这种自发耦合的好处尚不清楚。在这里，我们通过测试信息采样是否与心脏周期的收缩或舒张部分锁定，来研究心脏周期在信息采样中的作用，以此研究信息采样的作用。为此，我们采用了改良的信息采样任务，这是一种衡量在做出决策之前信息收集速度的标准方法，在该任务中，每个试验中新信息的传递开始要么与心脏收缩期要么与心脏舒张期耦合。信息在心脏收缩期呈现并没有以产生明显行为变化的方式显著调节信息处理。然而，我们发现的证据表明，更高的内感受意识会提高准确性，尤其是在任务的昂贵版本中，当新信息在收缩期顺序呈现时。总的来说，我们的结果增加了关于身心相互作用的研究，并表明我们的内部身体节律（即心跳）及其对它们的意识可以与我们处理周围嘈杂世界的方式相互作用。
