Paik Soo-Hyun, Park Chang-Hyun, Kim Jin-Young, Chun Ji-Won, Choi Jung-Seok, Kim Dai-Jin
Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea.
Department of Psychiatry, SMG-SNU Boramae Medical Center, Seoul, South Korea.
Front Psychiatry. 2019 Jul 23;10:516. doi: 10.3389/fpsyt.2019.00516. eCollection 2019.
Prolonged bedtime smartphone use is often associated with poor sleep quality and daytime dysfunction. In addition, the unstructured nature of smartphones may lead to excessive and uncontrolled use, which can be a cardinal feature of problematic smartphone use. This study was designed to investigate functional connectivity of insula, which is implicated in salience processing, interoceptive processing, and cognitive control, in association with prolonged bedtime smartphone use. We examined resting-state functional connectivity (rsFC) of insula in 90 adults who used smartphones by functional magnetic resonance imaging (fMRI). Smartphone time in bed was measured by self-report. Prolonged bedtime smartphone use was associated with higher smartphone addiction proneness scale (SAPS) scores, but not with sleep quality. The strength of the rsFC between the left insula and right putamen, and between the right insula and left superior frontal, middle temporal, fusiform, inferior orbitofrontal gyrus and right superior temporal gyrus was positively correlated with smartphone time in bed. The findings imply that prolonged bedtime smartphone use can be an important behavioral measure of problematic smartphone use and altered insula-centered functional connectivity may be associated with it.
长时间在睡前使用智能手机通常与睡眠质量差和白天功能障碍有关。此外，智能手机的无结构化性质可能导致过度和无节制使用，这可能是问题性智能手机使用的一个主要特征。本研究旨在调查与长时间在睡前使用智能手机相关的脑岛功能连接，脑岛与显著性处理、内感受处理和认知控制有关。我们通过功能磁共振成像（fMRI）检查了90名使用智能手机的成年人脑岛的静息态功能连接（rsFC）。通过自我报告测量在床上使用智能手机的时间。长时间在睡前使用智能手机与较高的智能手机成瘾倾向量表（SAPS）得分相关，但与睡眠质量无关。左脑岛与右壳核之间以及右脑岛与左额上回、颞中回、梭状回、眶额下回和右颞上回之间的rsFC强度与在床上使用智能手机的时间呈正相关。研究结果表明，长时间在睡前使用智能手机可能是问题性智能手机使用的一项重要行为指标，并且以脑岛为中心的功能连接改变可能与之相关。
