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
Brain’s blue spot possesses unexpected structure-function ties
The spatial arrangement of neurons in the locus coeruleus of mice corresponds with the cells’ targets across the brain, according to a new study.
Brain’s blue spot possesses unexpected structure-function ties
By
Holly Barker
25 May 2026 | 4 min read
Switching neural code may solve ongoing face-recognition debate
Face patch cells in macaque monkeys initially respond to images of any object but rapidly transition to attend to faces exclusively, a new study finds.
Switching neural code may solve ongoing face-recognition debate
By
Holly Barker
23 April 2026 | 5 min read
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
Explore more from The Transmitter
‘Unbelievably beautiful’ evidence extends Nobel Prize-winning model of vision
Orientation tuning—the ability to distinguish a horizontal line from a vertical one or something in between—originates in the visual cortex, according to new mouse synapse imaging experiments.
‘Unbelievably beautiful’ evidence extends Nobel Prize-winning model of vision
Orientation tuning—the ability to distinguish a horizontal line from a vertical one or something in between—originates in the visual cortex, according to new mouse synapse imaging experiments.
By
Claudia López Lloreda
29 May 2026 | 5 min read
Bringing basic biology back to INSAR
As the International Society for Autism Research has grown over the past two decades, basic science has become less central, Christine Wu Nordahl says. This year, she and other meeting organizers aimed to change that.
Bringing basic biology back to INSAR
As the International Society for Autism Research has grown over the past two decades, basic science has become less central, Christine Wu Nordahl says. This year, she and other meeting organizers aimed to change that.
By
Diana Kwon
28 May 2026 | 6 min read
Every neuroscience lab needs an ethicist
The ethics issues that arise in neuroscience research are usually novel, unresolved and understudied. Embedding ethicists in labs helps scientists navigate these challenges and develop strategies in real time to prevent harm.
Every neuroscience lab needs an ethicist
The ethics issues that arise in neuroscience research are usually novel, unresolved and understudied. Embedding ethicists in labs helps scientists navigate these challenges and develop strategies in real time to prevent harm.
By
Timothy E. Brown
27 May 2026 | 5 min read