Noradrenaline

Recent articles

Snoozing dragons stir up ancient evidence of sleep’s dual nature

Deep-sleep cycling between brain waves of higher and lower amplitude dates far back on the evolutionary tree, according to a new comparative study of mammals and reptiles.

By Lauren Schenkman
29 December 2025 | 0 min watch

The brain’s quiet conductor: How hidden cells fine-tune arousal

New research published today suggests that the pericoeruleus acts as a kind of micromanager of arousal, selectively inhibiting different subgroups of locus coeruleus neurons depending on the behavioral context.

By Mac Shine
7 May 2025 | 59 min watch
Three sleeping mice.

Fleeting sleep interruptions may help brain reset

Brief, seconds-long microarousals during deep sleep “ride on the wave” of locus coeruleus activity in mice and correlate with periods of waste clearing and memory consolidation, new research suggests.

By Shaena Montanari
13 January 2025 | 5 min read

Explore more from The Transmitter

Research images of the mouse visual cortex.

Astrocytes stabilize circuits in adult mouse brain

The glial cells secrete a protein that suppresses plasticity post-development.

By Holly Barker
6 January 2026 | 5 min read
Illustration of an open journal featuring lines of text and small illustrations of eyes and mouths.

Profiles of neurodevelopmental conditions; and more

Here is a roundup of autism-related news and research spotted around the web for the week of 5 January.

By Jill Adams
6 January 2026 | 1 min read
Brain-shaped go-karts race.

The 1,000 neuron challenge

A competition to design small, efficient neural models might provide new insight into real brains—and perhaps unite disparate modeling efforts.

By Tom Stafford
5 January 2026 | 7 min read

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