Is cardiovascular autonomic control during the day‐to‐night transition dependent on dim light melatonin onset? An exploratory analysis in healthy adults
Leandro C Brito, Megan Jones, Caroline P Garcês, Steven A Shea, Saurabh S Thosar · 2026
Read Is cardiovascular autonomic control during the day‐to‐night transition dependent on dim light melatonin onset? An exploratory analysis in healthy adults by Leandro C Brito, Megan Jones, Caroline P Garcês, Steven A Shea, Saurabh S Thosar (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13675520.txt.
Description
Leandro Brito and co-authors explore, in a 2026 study, whether the body's internal clock guides heart control as day turns to night. Melatonin rise in dim light marks the start of biological night. The team asked whether heart and blood pressure control shifts at that same moment.
Ten healthy adults, with an average age near 25, sat through a tightly controlled routine in very dim light. Saliva samples came every half hour, while heart rhythm and blood pressure were logged hourly. Each person stayed seated until an hour past their usual bedtime. Aligning clock markers with heart shifts could refine how doctors time rest, light, and drugs. The study is small and exploratory, as its title states.
Catalog record
| CREATOR | Leandro C Brito, Megan Jones, Caroline P Garcês, Steven A Shea, Saurabh S Thosar |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 34 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |