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November 13, 2025Sleep MedicineOpen Access

A multimodal 7T MRI and biomarker study reveals reversible brain changes following acute sleep deprivation

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Authors

EEEric EinspännerHMHendrik MatternHGHeiko Grossmann

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Implication

Multimodal assessment reveals that acute sleep deprivation significantly increases biomarkers and alters brain physiology, suggesting reversible effects in healthy individuals.

Key Points

  • This research aims to examine the effects of acute sleep deprivation on brain structure and physiology.
  • Thirty healthy participants underwent multimodal assessment including 7T MRI, plasma biomarker analysis, and PVT testing at baseline, after 24h of sleep deprivation, and after 72h recovery.
  • Assessment included measuring total perivascular space volume, glymphatic function markers, and cognitive performance via PVT.
  • Acute sleep deprivation led to a significant increase in total perivascular space volume, indicating impaired glymphatic function.
  • Reversible microstructural alterations were observed, including changes in T1 relaxation times and quantitative susceptibility mapping across multiple brain regions.
  • Participants demonstrated more attentional lapses during sleep deprivation, which were reversed after recovery.

Cite This Study

Einspänner et al. (2025) studied this question.

synapsesocial.com/papers/692523bbc0ce034ddc3549dchttps://doi.org/10.1016/j.sleep.2025.108663
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