Opioids

Recent articles

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

Sex hormone boosts female rats’ sensitivity to unexpected rewards

During the high-estradiol stages of their estrus cycle, female rats learn faster than they do during other stages—and than male rats overall—thanks to a boost in their dopaminergic response to reward, a new study suggests.

By Angie Voyles Askham
26 November 2025 | 5 min read

SHANK3 deficiency and behavior in mice; and more

Here is a roundup of autism-related news and research spotted around the web for the week of 24 November.

By Jill Adams
25 November 2025 | 2 min read

Remembering Mark Hallett, leader in transcranial magnetic stimulation

The long-time NINDS researcher, best known for studying movement disorders, has died at age 82.

By David Dobbs
25 November 2025 | 7 min read

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