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
Cerebellar neurons reorient brain activity to differentiate similar behaviors
The findings provide a new perspective on how granule cells help to generalize learning across tasks.
Cerebellar neurons reorient brain activity to differentiate similar behaviors
By
Holly Barker
29 September 2026 | 4 min read
Polarized cortical organoids mimic the brain’s regional organization
The organoids show region-specific gene-expression changes that match those observed during fetal development.
Polarized cortical organoids mimic the brain’s regional organization
By
Holly Barker
24 September 2026 | 4 min read
Neuropsychiatric MRI brain signatures fail reproducibility test
Small neuroimaging studies are unlikely to capture consistent anatomical changes related to conditions such as autism, schizophrenia and mood disorders, according to a new “wake-up call” study.
Neuropsychiatric MRI brain signatures fail reproducibility test
By
Holly Barker
12 August 2026 | 5 min read
Cortical territories compete in developmental space race
Sensory and association regions are established through a reciprocal process, according to a new model of cortical development.
Cortical territories compete in developmental space race
By
Holly Barker
30 July 2026 | 5 min read
Diverse autism genes derail common developmental pathways
Multiple genetic mouse models initially show delayed cortical development, but the animals’ molecular trajectories diverge within weeks after birth, a new study finds.
Diverse autism genes derail common developmental pathways
By
Holly Barker
8 July 2026 | 5 min read
Explore more from The Transmitter
How the pipa frog hunts prey by touch
Each of the frog’s eight fingers branches into 16 ultra-sensitive tips, which together function as a fovea—potentially the first demonstration of this type of sensory structure outside of mammals.
How the pipa frog hunts prey by touch
Each of the frog’s eight fingers branches into 16 ultra-sensitive tips, which together function as a fovea—potentially the first demonstration of this type of sensory structure outside of mammals.
By
Calli McMurray
30 September 2026 | 7 min read
Response to ‘Finally, a new route for the magnetic-sense field’
Magnetoreception in Drosophila has much to offer those with an interest in neuroscience.
Response to ‘Finally, a new route for the magnetic-sense field’
Magnetoreception in Drosophila has much to offer those with an interest in neuroscience.
By
Denis Henshaw
30 September 2026 | 3 min read
Organoids missing the TSC2 gene form rogue astrocytes; and more
Here is a roundup of autism-related news and research spotted around the web for the week of 28 September.
Organoids missing the TSC2 gene form rogue astrocytes; and more
Here is a roundup of autism-related news and research spotted around the web for the week of 28 September.
By
Jill Adams
29 September 2026 | 2 min read