【話題】アラーム音を変更するだけで目覚めが劇的に改善することが判明、どんな音が最適なのか？

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Stimuli Treatments and Age Demographics
＜略＞
In summary, for children awakening in emergency conditions, a low-pitch alarm or voice notifications appears to be more effective in counteracting the effects of sleep inertia than alarms with higher frequencies, particularly in memory and RT. For adults abruptly awakened, there is currently insufficient evidence to support firm conclusions regarding the best alarm types and voice signals concerning sleep inertia post-awakening. Optimistic results have been found in non-emergency awakenings with respect to musical treatments in adults, particularly preferred popular music, and alarms with melodic qualities.

年齢ごとに効果に差もあるようです。詳しくは原文をご覧ください。