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.
Maris Fessenden
Contributing writer
Freelance
From this contributor
Lightweight system captures brain activity while mice jump
A thin “micro-tether” and rotating connector facilitate uninterrupted, hours-long neural population recordings as the animals freely explore their environment.
Lightweight system captures brain activity while mice jump
By
Maris Fessenden
26 September 2023 | 3 min read
Atlas of developing brain reveals rainbow of cell types
An online resource reveals all major cell types in the developing human brain during the period in which autism is thought to arise.
Atlas of developing brain reveals rainbow of cell types
By
Maris Fessenden
20 September 2019 | 2 min read
New method dramatically scales up mapping of active genes in cells
A new technique enables scientists to isolate, and chart gene expression in, tens of thousands of cells at once.
New method dramatically scales up mapping of active genes in cells
By
Maris Fessenden
23 August 2019 | 2 min read
Online platform offers one-stop shop for studying brain circuits
A browser-based platform simulates functional neuronal circuits in the brain regions of several species.
Online platform offers one-stop shop for studying brain circuits
By
Maris Fessenden
2 August 2019 | 2 min read
Database, lab tricks may crack secrets of the synapse
Two new resources may aid the study of synapses, the junctions between neurons.
Database, lab tricks may crack secrets of the synapse
By
Maris Fessenden
19 July 2019 | 2 min read
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When autistic kids grow up, Chapter 3: Would there be data?
Tempest McDonald takes a postdoctoral position at Vanderbilt University. Researching her paper accusing the National Institutes of Health of discrimination threatens everything she has built.
When autistic kids grow up, Chapter 3: Would there be data?
Tempest McDonald takes a postdoctoral position at Vanderbilt University. Researching her paper accusing the National Institutes of Health of discrimination threatens everything she has built.
By
Brady Huggett
18 June 2026 | 27 min listen
Cousin comparison parses genetic effects in autism
The approach helps reveal whether maternal genes contribute directly to autism in children or have indirect effects on the prenatal environment.
Cousin comparison parses genetic effects in autism
The approach helps reveal whether maternal genes contribute directly to autism in children or have indirect effects on the prenatal environment.
By
Charles Q. Choi
18 June 2026 | 4 min read
Single-neuron recordings zoom into ‘blurry map’ of human motor cortex
The motor cortex is organized into an "intermixed jumble of tiles" to generate meaningful movement.
Single-neuron recordings zoom into ‘blurry map’ of human motor cortex
The motor cortex is organized into an "intermixed jumble of tiles" to generate meaningful movement.
By
Claudia López Lloreda
17 June 2026 | 5 min read