Timothy Roberts is Oberkircher Family Chair in Pediatric Radiology and vice-chair of radiology research at the Children’s Hospital of Philadelphia. He is also professor of radiology at the University of Pennsylvania.
Timothy Roberts
Professor of radiology
Children's Hospital of Philadelphia
From this contributor
In quest for autism biomarkers, this technique has magnetic appeal
To find biological markers of autism, scientists would be wise to measure the brain's electrical activity along with the resulting magnetic fields.

In quest for autism biomarkers, this technique has magnetic appeal
When tracking brain activity, timing can be key
A brain imaging technique called magnetoencephalography characterizes not just what is happening in the brain, but also where and when, making it ideally suited for studying autism.

When tracking brain activity, timing can be key
Imaging biomarkers could signal autism spectrum disorder
There does not appear to be a single genetic or environmental cause of autism, and given the heterogeneity of symptoms, coming up with a clear yes or no test for autism is challenging. Timothy Roberts argues that imaging and electrophysiology are key in the search for autism biomarkers.

Imaging biomarkers could signal autism spectrum disorder
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The challenge of defining a neural population
Our current approach is largely arbitrary. We need new methods for grouping cells, ideally by their dynamics.

The challenge of defining a neural population
Our current approach is largely arbitrary. We need new methods for grouping cells, ideally by their dynamics.
Oxytocin prompts prairie voles to oust outsiders, fortifying their friendships
The “love hormone” drives the neurobiology behind platonic bonds in animals usually studied for their romantic attachments.

Oxytocin prompts prairie voles to oust outsiders, fortifying their friendships
The “love hormone” drives the neurobiology behind platonic bonds in animals usually studied for their romantic attachments.
Contested paper on vaccines, autism in rats retracted by journal
The editor-in-chief cited “inconsistencies in the number of subjects” as the reason for the retraction.

Contested paper on vaccines, autism in rats retracted by journal
The editor-in-chief cited “inconsistencies in the number of subjects” as the reason for the retraction.