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 | 0 min watch
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
Explore more from The Transmitter
The genome offers a recipe, not a blueprint, for the brain
During brain development, genes set the rules and turn the knobs; self-organization does much of the rest.
The genome offers a recipe, not a blueprint, for the brain
During brain development, genes set the rules and turn the knobs; self-organization does much of the rest.
By
Ila Fiete
2 November 2026 | 8 min read
Autism research involving monkeys contends with uphill battle
Macaques and marmosets recapitulate the condition’s core traits better than mice can, but funding uncertainty and challenges at primate centers in the United States could make this work difficult to continue.
Autism research involving monkeys contends with uphill battle
Macaques and marmosets recapitulate the condition’s core traits better than mice can, but funding uncertainty and challenges at primate centers in the United States could make this work difficult to continue.
By
Diana Kwon
2 November 2026 | 8 min read
When is self-organization a mechanism in brain development?
Retinal waves offer a powerful example of a self-organizing system that can build structure without external guidance. The field would do well to embrace such phenomena more broadly as a type of mechanistic explanation.
When is self-organization a mechanism in brain development?
Retinal waves offer a powerful example of a self-organizing system that can build structure without external guidance. The field would do well to embrace such phenomena more broadly as a type of mechanistic explanation.
By
P. Robin Hiesinger
2 November 2026 | 6 min read