Association of evening smartphone use with cardiac autonomic nervous activity after awakening in adolescents living in high school dormitories

Smartphones are prevalently used among adolescents; however, nighttime exposure to blue-enriched light, through electric devices, is known to induce delays of the circadian rhythm phases and poor morning somatic conditions. We therefore investigated whether evening smartphone use may affect sleep-wake cycle and cardiac autonomic nervous system (ANS… CONTINUE READING