Headshot of Maris Fessenden.

Maris Fessenden

Contributing writer
Freelance

Maris Fessenden is a freelance journalist and illustrator based in Bozeman, Montana. They report and write about scientific methods, genetics, health, wildlife and ecology, and the intersection of science and art.

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Cortical organoids.

Five-year-old human brain organoids aged on schedule

The cultured spheres typically mimic only prenatal development, but the five-year-old ones grown in Paola Arlotta’s lab acquired postnatal features.

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Brainstem neurons add new element to ‘already complex’ anxiety circuitry

Precise optogenetic modulation of a medullary neuron population reveals their role in anxiety-like behaviors.

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