R. Douglas Fields
Writer at Freelance
Neuroscientist & science writer. Author of Why We Snap & The Other Brain. My scientific research is on cellular mechanisms of brain development & memory.
Articles
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2 weeks ago |
tandfonline.com | R. Douglas Fields |Dipankar Dutta
The g-ratio is fundamental in all morphological studies of myelin to quantify the relative thickness of the myelin sheath on axons, but the relationship of g-ratio to axon diameter is unclear. The g-ratio is calculated simply by taking the ratio of the diameter of the myelinated fiber to the diameter of the axon inside the myelin sheath.
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Sep 27, 2024 |
sciencedirect.com | R. Douglas Fields |R.B. Merrifield |F. Parenti
Cyclic peptides have attracted considerable attention in recent years due to their unique structural properties and potential applications in biomedical nanotechnology. The Web of Science Core Collection contains over 34,700 indexed publications on cyclic peptides, with more than 11,600 in the past 10 years. This includes more than 29,500 scientific articles and around 300 book chapters.
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Sep 26, 2024 |
quantamagazine.org | Janna Levin |Annie Melchor |Yasemin Saplakoglu |R. Douglas Fields
Introduction If instruments do someday detect evidence of life beyond Earth, whether it’s in this solar system or in the farther reaches of space, astrobiologists want to be ready. One of the best ways to learn how alien life might function can be to study the organisms called extremophiles, which live in incredibly challenging environments on or in the Earth.
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Sep 16, 2024 |
quantamagazine.org | Annie Melchor |Yasemin Saplakoglu |R. Douglas Fields
Introduction For a molecule of RNA, the world is a dangerous place. Unlike DNA, which can persist for millions of years in its remarkably stable, double-stranded form, RNA isn’t built to last — not even within the cell that made it. Unless it’s protectively tethered to a larger molecule, RNA can degrade in minutes or less. And outside a cell? Forget about it.
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Sep 13, 2024 |
smithsonianmag.com | R. Douglas Fields
The original version of this story appeared in Quanta Magazine. It is late at night. You are alone and wandering empty streets in search of your parked car when you hear footsteps creeping up from behind. Your heart pounds; your blood pressure skyrockets. Goose bumps appear on your arms, sweat on your palms. Your stomach knots, and your muscles coil, ready to sprint or fight. Now imagine the same scene, but without any of the body’s innate responses to an external threat. Would you still feel afraid?
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To my myelin biologist friends--Why you've been doing g-ratios wrong. My commentary on Alexander Gow's new paper: https://t.co/34DRyZ8Ace https://t.co/OOHi6wdvt4
Tweaking LSD to treat schizophrenia without causing hallucinations. https://t.co/yieWC7MLPx
Sugar craving and diabetes linked to gut bacteria. https://t.co/RTunxcHmRl