u/Mother-Bluejay7412

The theory also explains that memory consolidation is not the function of REM sleep. This is relevant because the prevailing consensus is precisely that REM sleep serves to consolidate memories, as if that were its function.

I'd like to know your thoughts on this article. If the theory is correct, it could have many implications for medicine.

https://doi.org/10.1016/j.sleepx.2026.100186

The biological function of REM sleep remains one of the great mysteries of neuroscience. Most of neuroscientists have long assumed it’s about memory consolidation or emotional processing. But a recent paper proposes another explanation. The paper in question was published in Sleep Medicine X.

The author proposes that REM sleep evolved as a sentinel mechanism. His key argument is that the Sentinel Sleep Theory resolves the paradox of why we spend so much time in a state that looks like wakefulness but keeps us paralyzed.

I’d love to hear your thoughts on this research.

https://doi.org/10.1016/j.sleepx.2026.100186

The biological function of REM sleep remains one of the great mysteries of neuroscience. Most of neuroscientists have long assumed it’s about memory consolidation or emotional processing. But a recent paper proposes another explanation. The paper in question was published in Sleep Medicine X.

The author proposes that REM sleep evolved as a sentinel mechanism. His key argument is that the Sentinel Sleep Theory resolves the paradox of why we spend so much time in a state that looks like wakefulness but keeps us paralyzed.

I’d love to hear your thoughts on this research.

https://doi.org/10.1016/j.sleepx.2026.100186

A função biológica do sono REM permanecia um dos grandes mistérios da neurociência. Há muito tempo os neurocientistas presumiam que a função do sono REM estava relacionada à consolidação de memórias e ao processamento emocional. Mas, de um ponto de vista evolutivo, o custo do sono REM (atonia e alta taxa metabólica) é imenso.

Um artigo recente da revista Sleep Medicine X propõe que o sono REM evoluiu como um mecanismo sentinela. Trata-se de uma ativação cerebral periódica que compensa a elevada vulnerabilidade do sono profundo.

O argumento principal do autor é que a "Teoria do Sono Sentinela" resolve o paradoxo de por que passamos tanto tempo em um estado que se assemelha à vigília, mas nos mantém paralisados.

Gostaria muito de ouvir suas opiniões sobre esse artigo. Acreditam que é realmente a resposta para a função do sono REM?

https://doi.org/10.1016/j.sleepx.2026.100186