Headshot of Holly Barker.

Holly Barker

Contributing writer

Holly Barker is a freelance writer specializing in biology, medicine and psychology. She has a Ph.D. in clinical neuroscience from King’s College London in the United Kingdom and a B.Sc. degree in biochemistry from the University of Manchester. She has previously written for Discover and BioNews. She is based in London.

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Spectrum

Reporting bias widespread in early-childhood autism intervention trials

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Research image of a lamprey.
Evolution

New look at lampreys rewrites textbooks on origins of sympathetic nervous system

Sympathetic neurons pepper the embryos of the jawless fish—Earth’s first vertebrates—and overturn the idea that “fight or flight” was an innovation of jawed vertebrates.

By Shaena Montanari
17 April 2024 | 4 min read