Excessive usage of electronic devices delays bedtime and increases nighttime arousal, reducing sleep duration of adolescents in the morning shift. The impacts of media use before bedtime (MBB) on sleep patterns and components of morning attention were evaluated in 89 adolescents (15.8 ± 0.8 years) using sleep questionnaires and a continuous performance task. Multivariate multiple regression analysis was used to examine relationships of MBB, chronotype, and gender with sleep and attention. Smartphones were found to be the most frequently used device before bedtime. Attention components were found to be significantly associated with MBB, with a higher frequency of MBB predicting slower reaction times for tonic and phasic alertness and less stable performance of sustained attention. Media usage before bedtime was not significantly associated with patterns of sleep nor sleep quality. This study showed negative impacts of MBB on most components of morning attention, potentially leading to compromised learning in adolescents.

中文翻译：

---

睡前使用电子设备对青少年睡眠和注意力的影响

电子设备的过多使用会延迟就寝时间，并增加夜间唤醒时间，从而减少了早晨上班的青少年的睡眠时间。使用睡眠调查表和一项持续的工作任务，评估了89位青少年（15.8±0.8岁）就寝前使用媒体（MBB）对睡眠方式和早晨注意力的影响。多元多元回归分析用于检查MBB，表型和性别与睡眠和注意力的关系。人们发现智能手机是睡前最常用的设备。发现注意力成分与MBB显着相关，MBB的频率越高，预示进补和阶段性警觉的反应时间越慢，持续注意力的稳定性就越差。睡前的媒体使用与睡眠方式或睡眠质量没有显着相关。这项研究表明，MBB对早晨注意力的大多数组成部分都有负面影响，这可能导致青少年学习受损。