Helen Pearson is a science writer based in New York City.
Helen Pearson
Freelance writer
Simons Foundation
From this contributor
Father’s advanced age feeds autism risk
Are older fathers more likely to have children with autism? A series of epidemiological studies is giving credence to the idea, suggesting that, with age, sperm may accumulate damage that increases risk in the next generation.
Sense of ‘self’ impaired in autism
People with autism struggle to see their own role in social situations. That's the conclusion from the first study to scan individualsʼ brains while they interact with another person - a technique that could lead to a diagnostic tool.
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Dispute erupts over universal cortical brain-wave claim
The debate highlights opposing views on how the cortex transmits information.
Dispute erupts over universal cortical brain-wave claim
The debate highlights opposing views on how the cortex transmits information.
By
Claudia López Lloreda
12 December 2025 | 5 min read
Waves of calcium activity dictate eye structure in flies
Synchronized signals in non-neuronal retinal cells draw the tiny compartments of a fruit fly’s compound eye into alignment during pupal development.
Waves of calcium activity dictate eye structure in flies
Synchronized signals in non-neuronal retinal cells draw the tiny compartments of a fruit fly’s compound eye into alignment during pupal development.
By
Lauren Schneider
12 December 2025 | 0 min watch
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and thalamus are more likely than the cerebral cortex to express autism variants or bear transcriptional changes, two unpublished studies find.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
The striatum and thalamus are more likely than the cerebral cortex to express autism variants or bear transcriptional changes, two unpublished studies find.
By
Holly Barker
11 December 2025 | 5 min read