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Sleep deprivation weakens memory at several stages. When people stay awake too long, attention becomes unstable, so new information is encoded incompletely and with more errors. Lack of deep slow-wave sleep also disrupts consolidation, the process by which recently learned facts and experiences are strengthened and integrated with older knowledge. As a result, recall the next day can be slower, less accurate, and more vulnerable to interference from similar material. Sleep loss can especially harm working memory, making it harder to hold instru…

Sleep deprivation significantly impairs memory in multiple ways, affecting both the formation and recall of information. When individuals do not get enough sleep, the brain's ability to consolidate memories is hindered because this process largely takes place during various sleep stages, including deep sleep and rapid eye movement sleep. As a result, facts and experiences from the day before are less likely to be transferred effectively into long-term storage. Additionally, sleep loss reduces the efficiency of memory encoding by diminishing att…