青少年呼吸集中注意力的动态功能连接特征。

IF 2.9 2区 医学 Q2 NEUROSCIENCES
Isaac N Treves, Aaron K Kucyi, Anna O Tierney, Emma Balkind, Susan Whitfield-Gabrieli, Zev Schuman-Olivier, John D E Gabrieli, Christian A Webb
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引用次数: 0

摘要

呼吸冥想通常包括将注意力集中在呼吸上,并在走神时重新转移注意力。到目前为止,我们还没有完全理解呼吸注意的神经机制,特别是,呼吸注意和休息之间的大规模网络相互作用是如何不同的,以及这些相互作用是如何在对呼吸的任务和非任务注意期间被调节的。一种有希望的方法可能是检查功能磁共振成像测量,包括大脑区域之间的静态连接以及动态的、随时间变化的大脑状态。在这项研究中,我们分析了72名青少年在呼吸计数任务(BCT)期间的静态和动态功能连接,利用生理呼吸数据来检测客观的任务和非任务时期。与休息相比,在BCT过程中,我们发现注意方向和定向网络的静态连通性有所增加,注意网络和DMN之间存在反相关关系。动态连通性分析揭示了四种不同的大脑状态,其中包括一种dmn反相关的大脑状态,在BCT期间比其他状态更多地出现。我们发现在BCT中有明显的大脑状态标记(i)呼吸任务与休息,(ii)任务中与任务外的瞬间注意力,但在本分析中,没有可识别的大脑状态反映个体之间的行为差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic functional connectivity signatures of focused attention on the breath in adolescents.

Breathing meditation typically consists of directing attention toward breathing and redirecting attention when the mind wanders. As yet, we do not have a full understanding of the neural mechanisms of breath attention, in particular, how large-scale network interactions may be different between breath attention and rest and how these interactions may be modulated during periods of on-task and off-task attention to the breath. One promising approach may be examining fMRI measures including static connectivity between brain regions as well as dynamic, time-varying brain states. In this study, we analyzed static and dynamic functional connectivity in 72 adolescents during a breath-counting task (BCT), leveraging physiological respiration data to detect objective on-task and off-task periods. During the BCT relative to rest, we identified increases in static connectivity within attention-direction and orienting networks and anticorrelations between attention networks and the DMN. Dynamic connectivity analysis revealed four distinct brain states, including a DMN-anticorrelated brain state, proportionally more present during the BCT than the rest. We found there were distinct brain state markers of (i) breathing tasks vs rest and (ii) momentary on-task vs off-task attention within the BCT, yet in this analysis, no identifiable brain states reflecting between-individual behavioral variability.

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来源期刊
Cerebral cortex
Cerebral cortex 医学-神经科学
CiteScore
6.30
自引率
8.10%
发文量
510
审稿时长
2 months
期刊介绍: Cerebral Cortex publishes papers on the development, organization, plasticity, and function of the cerebral cortex, including the hippocampus. Studies with clear relevance to the cerebral cortex, such as the thalamocortical relationship or cortico-subcortical interactions, are also included. The journal is multidisciplinary and covers the large variety of modern neurobiological and neuropsychological techniques, including anatomy, biochemistry, molecular neurobiology, electrophysiology, behavior, artificial intelligence, and theoretical modeling. In addition to research articles, special features such as brief reviews, book reviews, and commentaries are included.
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