# Sleep-like slow waves during wakefulness are associated with hallucinations and poorer cognition in Parkinson’s disease

Source: [science.org](https://www.science.org/doi/abs/10.1126/scitranslmed.aec1215?af=R) · 2026-11-11 · Medicine
Page: https://themorning.science/story/sleep-like-slow-waves-during-wakefulness-are-associated-with-hallucinations-and-6c2790265e83706d
Kind: research · Impact: medium

## In brief

- Sleep-like slow waves occurring during wakefulness are associated with hallucinations in people with Parkinson's disease.
- The same slow waves are also associated with poorer cognition in people with Parkinson's disease.
- The findings were published in Science Translational Medicine, Volume 18, Issue 875, November 2026.

## Why it matters

The study links a measurable brain activity pattern to hallucinations and cognitive decline in Parkinson's disease, which may inform how these symptoms are understood and studied.

## Timeline

- 2026-11-11: Study published in Science Translational Medicine

## Coverage

- [Sleep-like slow waves during wakefulness are associated with hallucinations and poorer cognition in Parkinson’s disease](https://www.science.org/doi/abs/10.1126/scitranslmed.aec1215?af=R) — science.org, 2026-11-11

Tags: parkinson's, sleep, hallucinations, cognition, neuroscience

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science