Tsukuba, Japan—During deep sleep, brain wave amplitude increases, and "δ (delta) power," a key objective indicator of sleep quality, is observed; higher delta power corresponds to deeper, more ...

Modern people who are pressed for time every day tend to do multiple tasks at the same time, such as ``replying to work emails while watching TV,'' ``creating shopping notes while attending a meeting, ...

Multitasking is a common practice among secondary school students today. Many try to complete assignments while listening to music, revise their lessons while chatting online, or switch constantly ...