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.
Holly Barker
Contributing writer
From this contributor
Astrocytes stabilize circuits in adult mouse brain
The glial cells secrete a protein that suppresses plasticity post-development.
Astrocytes stabilize circuits in adult mouse brain
By
Holly Barker
6 January 2026 | 5 min read
Among brain changes studied in autism, spotlight shifts to subcortex
The striatum and thalamus are more likely than the cerebral cortex to express autism variants or bear transcriptional changes, two unpublished studies find.
Among brain changes studied in autism, spotlight shifts to subcortex
By
Holly Barker
11 December 2025 | 5 min read
Home makeover helps rats better express themselves: Q&A with Raven Hickson and Peter Kind
The “Habitat”—a complex environment with space for large social groups—expands the behavioral repertoire of rodent models, Hickson and Kind say.
Home makeover helps rats better express themselves: Q&A with Raven Hickson and Peter Kind
By
Holly Barker
4 December 2025 | 0 min watch
Constellation of studies charts brain development, offers ‘dramatic revision’
The atlases could pinpoint pathways that determine the fate of cells linked to neurodevelopmental conditions.
Constellation of studies charts brain development, offers ‘dramatic revision’
By
Holly Barker
5 November 2025 | 6 min read
Protein tug-of-war controls pace of synaptic development, sets human brains apart
Human-specific duplicates of SRGAP2 prolong cortical development by manipulating SYNGAP, an autism-linked protein that slows synaptic growth.
Protein tug-of-war controls pace of synaptic development, sets human brains apart
By
Holly Barker
23 October 2025 | 7 min read
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After NINDS director ouster, 40 neuroscience organizations press U.S. Congress for oversight over hiring process
A letter signed by the groups asks Congress to ensure that scientific expertise remains a priority in the search for a new director of the National Institute of Neurological Disorders and Stroke.
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BRAIN Initiative researchers ‘dream big’ amid shifts in leadership, funding
But whether the initiative’s road map for the next decade is feasible remains an open question.
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23 January 2026 | 6 min read