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
Split gene therapy delivers promise in mice modeling Dravet syndrome
The new approach overcomes viral packaging limitations by delivering SCN1A piecemeal and stitching it together in target cells.
Split gene therapy delivers promise in mice modeling Dravet syndrome
By
Holly Barker
10 April 2025 | 5 min read
PTEN problems underscore autism connection to excess brain fluid
Damaging variants in the autism-linked gene cause congenital hydrocephalus—a buildup of cerebrospinal fluid in the brain—by turbocharging a downstream signaling pathway that promotes the growth of cells, according to a new study.
PTEN problems underscore autism connection to excess brain fluid
By
Holly Barker
3 April 2025 | 4 min read
Cell ‘fingerprints’ identify distinct cortical networks
These networks align with different assemblages of cells, a finding that could reveal how cellular diversity influences brain function, according to a new study.
Cell ‘fingerprints’ identify distinct cortical networks
By
Holly Barker
28 February 2025 | 4 min read
Structure of striatum varies by sex in autistic children
The changes could reflect different developmental trajectories between boys and girls with autism, a new study suggests.
Structure of striatum varies by sex in autistic children
By
Holly Barker
27 February 2025 | 4 min read
X marks the spot in search for autism variants
Genetic variants on the X chromosome, including those in the gene DDX53, contribute to autism’s gender imbalance, two new studies suggest.
X marks the spot in search for autism variants
By
Holly Barker
16 January 2025 | 6 min read
Explore more from The Transmitter
Multisite connectome teams lose federal funding as result of Harvard cuts
The teams aim to develop tools to scale up mouse connectomics in preparation for eventually mapping an entire human brain.
Multisite connectome teams lose federal funding as result of Harvard cuts
The teams aim to develop tools to scale up mouse connectomics in preparation for eventually mapping an entire human brain.
By
Angie Voyles Askham
28 May 2025 | 5 min read
Learning in living mice defies classic synaptic plasticity rule
Donald Hebb’s theory—memorably summarized as “cells that fire together, wire together”—does not explain the shifting hippocampal connections in mice learning to navigate a virtual environment, according to a new study.
Learning in living mice defies classic synaptic plasticity rule
Donald Hebb’s theory—memorably summarized as “cells that fire together, wire together”—does not explain the shifting hippocampal connections in mice learning to navigate a virtual environment, according to a new study.
By
Sydney Wyatt
28 May 2025 | 5 min read
Cephalopods, vision’s next frontier
For decades, scientists have been teased by the strange but inaccessible cephalopod visual system. Now, thanks to a technological breakthrough from a lab in Oregon, data are finally coming straight from the octopus brain.
Cephalopods, vision’s next frontier
For decades, scientists have been teased by the strange but inaccessible cephalopod visual system. Now, thanks to a technological breakthrough from a lab in Oregon, data are finally coming straight from the octopus brain.
By
Calli McMurray
27 May 2025 | 13 min read