Sleep

Recent articles

When we sleep, our brain is filled with spontaneous neural activity. What is it doing?

Daniel Levenstein explains how internally generated brain activity during sleep shapes our cognition, and why NeuroAI is such a powerful approach to understanding the brain.

By Paul Middlebrooks
2 September 2026 | 96 min listen
Covers of The Transmitter's summer book picks.

Five new neuroscience books, and other notable titles from 2026

The Transmitter’s summer reading list includes an autopsy of the Human Brain Project, an overview of the neuroscience of motherhood and a memoir from a pioneer in Huntington’s disease research.

By Francisco J. Rivera Rosario
25 August 2026 | 7 min read
Research image of mouse brain.

Making waves: Sleep-like brain activity in awake mice lowers sleep need, boosts memory

Alternating on/off firing patterns don’t just characterize deep, slow-wave sleep, they drive some of its restorative benefits, new findings suggest.

By Alissa de Chassey
16 July 2026 | 4 min read
Illustration of lucid dreaming.

Watching the mind build a world: Lucid dreaming as a model for generative perception

Lucid dreaming offers a rare opportunity to observe and probe perception from within.

By Magdalena Paluchowska
13 July 2026 | 8 min read

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
Sleep-control neurons glow cyan in the central nervous system of a fly.

Mitochondria set ‘ancient’ metabolic thermostat for sleep in flies, separate from circadian rhythms

During waking hours, a specialized set of sleep neurons in the fly brain accumulates reactive oxygen species, which eventually trigger sleep to clean up and repair the damage they do.

By Viviane Callier
9 September 2025 | 5 min read
Book cover for Bird Brains and Behavior: A Synthesis, showing several bird species.

‘Bird Brains and Behavior,’ an excerpt

In their new book, published today, Georg Striedter and Andrew Iwaniuk dive deep into the latest research on the neural mechanisms of avian behavior. This excerpt from Chapter 2 explores how birds sleep.

By Andrew Iwaniuk, Georg Striedter
5 August 2025 | 9 min read
A fly over a background of waves of different colors.

Drosophila, like vertebrates, filter sensory information during sleep

Predictive sensory processing in sleeping Drosophila echoes vertebrate research, establishing an evolutionarily conserved neural signature of sleep.

By Siddhant Pusdekar
8 July 2025 | 5 min read
Image of brain cell activity in rat brains.

Sleep doesn’t just consolidate memories; it actively shapes them

The rapid eye movement (REM) phase preserves newly acquired memories, but deeper non-REM sleep helps to adapt and update them, according to “heroic” day-long electrode recordings in rats.

By Giorgia Guglielmi
6 May 2025 | 5 min read
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

Illustrated collage of a monkey profile, a gloved hand holding a vaccine syringe touching an outline of the United States with two primates sitting near it, a strand of DNA, and flags of the United States and China in the background.

U.S. national primate research centers face an uncertain future

The facilities were meant to last 100 years. Four decades shy of that mark, amid flatlined funds and mounting political pressure, their directors are trying to find a path forward.

By Calli McMurray
9 October 2026 | 12 min read
Reflections of primates in lab equipment (bottom left: Rhesus macaque, top left: Pig-tailed macaque, bottom right: Crab-eating macaque. top right: Marmoset

What if nonhuman primate research goes away?

As the U.S. government takes steps to stop using nonhuman primates in research, The Transmitter investigates what that shift could mean for neuroscience.

By The Transmitter
9 October 2026 | 2 min read
Illustration of primate hands interacting with objects of cognitive tests.

The neuroscience questions that need nonhuman primates

The Transmitter asked 17 neuroscientists what questions might remain unanswered if support for nonhuman primate research continues to decline.

By Alissa de Chassey
9 October 2026 | 10 min read