Opioids

Recent articles

Howard Fields.

In memoriam: Howard Fields, pain research pioneer

Over six decades, Fields mapped out the circuits of both pain and addiction.

By Natalia Mesa
22 May 2026 | 7 min read
Research image of enteric neurons in zebrafish.

Opioid receptors may guide formation of gut nervous system in zebrafish

Fish lacking functional copies of the receptors have fewer enteric neurons than usual, but the findings await further validation.

By Olivia Gieger
26 June 2024 | 4 min read

Explore more from The Transmitter

New projectome captures ‘complex beast’ of serotonin system in mice

The whole-brain map—the first of its kind in a vertebrate—identifies five distinct neuron groups.

By Madeline Shaw
2 October 2026 | 0 min watch
Research image showing a grid of MRI images.

Silent, motion-resistant fMRI expands scans in behaving mice

The method, called SORDINO, captures brain images in animals while they move and interact.

By Diana Kwon
2 October 2026 | 5 min read
Illustration of DNA with genetic code.

Autism-linked variants converge on two molecular patterns in mouse brains

Gene activity across 17 autism mouse models occurs in either of two opposing transcriptomic states, supporting the idea that diverse genetic changes may converge on a few recurring biological patterns.

By Giorgia Guglielmi
1 October 2026 | 4 min read