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 in mouse amygdala encode emotional state
The glial cells’ activity reliably tracks with freezing, hesitancy and other behaviors reminiscent of anxiety.
Astrocytes in mouse amygdala encode emotional state
By
Holly Barker
24 March 2026 | 4 min read
Revised statistical bar extracts less-common variants from autism genetics studies
Adjusting genetic analyses could help plug autism’s heritability gap, according to a new preprint.
Revised statistical bar extracts less-common variants from autism genetics studies
By
Holly Barker
12 March 2026 | 4 min read
Astrocytes orchestrate oxytocin’s social effects in mice
The cells amplify oxytocin—and may be responsible for sex differences in social behavior, two preprints find.
Astrocytes orchestrate oxytocin’s social effects in mice
By
Holly Barker
4 March 2026 | 5 min read
Aging neurons outsource garbage disposal, clog microglia
Degradation-resistant proteins pass from neurons to glial cells in a process that may spread protein clumps around the brain, according to a study in mice.
Aging neurons outsource garbage disposal, clog microglia
By
Holly Barker
10 February 2026 | 5 min read
‘Tour de force’ study flags fount of interneurons in human brain
The newly discovered cell type might point to the origins of the inhibitory imbalance linked to autism and other conditions.
‘Tour de force’ study flags fount of interneurons in human brain
By
Holly Barker
29 January 2026 | 4 min read
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Neuroscience conference policy draws confusion, apology
NeurIPS organizers apologized and altered course after issuing a policy that barred submissions from researchers at U.S.-government-sanctioned institutions.
Neuroscience conference policy draws confusion, apology
NeurIPS organizers apologized and altered course after issuing a policy that barred submissions from researchers at U.S.-government-sanctioned institutions.
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Dalmeet Singh Chawla
27 March 2026 | 5 min read
Funding for animal research alternatives reaches ‘inflection point’
The United States and Europe are dedicating hundreds of millions of dollars in funding to advance novel alternative methods, but not all neuroscientists see this as a positive step.
Funding for animal research alternatives reaches ‘inflection point’
The United States and Europe are dedicating hundreds of millions of dollars in funding to advance novel alternative methods, but not all neuroscientists see this as a positive step.
By
Claudia López Lloreda
26 March 2026 | 4 min read
‘Friction-maxxing’ in school: Students should read primary literature, not AI summaries
Trainees need to learn how to identify a neuroscience paper’s major takeaways and integrate them into their understanding. This skill doesn’t come from outsourcing the work to large language models.
‘Friction-maxxing’ in school: Students should read primary literature, not AI summaries
Trainees need to learn how to identify a neuroscience paper’s major takeaways and integrate them into their understanding. This skill doesn’t come from outsourcing the work to large language models.
By
Nora Bradford
26 March 2026 | 5 min read