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Breakthrough Study Links Pupil Size to Sleep Stages

3/6/2025

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Researchers Uncover Sleep Link
  • Researchers at ETH Zurich have uncovered a fascinating link between pupil size and brain activity during sleep. By innovatively keeping subjects' eyes open while they slumber, they revealed how pupil fluctuations correlate with different sleep stages. This groundbreaking discovery could pave the way for improved diagnosis and treatment of sleep disorders and neurological issues, offering hope for many.
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