Glymphatic system

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
fMRI scans showing the movement of cerebrospinal fluid.

Noninvasive method lifts curtain on cerebrospinal-fluid dance in human brain

Cerebrospinal fluid shows brain-region-specific dynamics, a new high-resolution MRI approach reveals.

By Claudia López Lloreda
14 November 2025 | 4 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
Illustration of a lab with a smoking crater in the middle of the floor.

The Transmitter’s favorite features of 2024

Our chosen stories include tales about research misconduct in the lab, a neuroscientist working at the end of the world, and the passing of neuroanatomy’s “great-grandfather,” Harvey Karten.

By The Transmitter
23 December 2024 | 2 min read
New method reignites controversy over brain clearance during sleep.

New method reignites controversy over brain clearance during sleep

Tracers injected directly into mouse brain tissue instead of the cerebrospinal fluid show that brain clearance slows during sleep and under anesthesia, according to a study published last week—but proponents of the glymphatic system theory take issue with the technique.

By Elissa Welle
22 May 2024 | 8 min read
Maiken Nedergaard, Britta Engelhardt and Christer Betsholtz on a floating rock island with university facilities and abstract shapes.

Maiken Nedergaard’s power of disruption

The award-winning researcher’s discoveries have changed the way we think about the brain; that’s exactly what her critics dislike.

By Emily Sohn
26 February 2024 | 24 min read

Explore more from The Transmitter

Mother mouse and her offspring.

Maternity induces lasting gene-expression changes in mouse brains

The findings add to a small but growing body of research on neurological changes linked to pregnancy, birth and parenting.

By Amber Dance
12 June 2026 | 5 min read
Map of socioeconomic opportunity in the United States next to visualizations of functional connectivity and structure in sensory and motor cortices.

IQ’s link to brain structure, function in children may be a mirage

A child’s socioeconomic status, screen time and amount of sleep all show stronger associations with measures of brain structure and function, according to an imaging study of nearly 12,000 9- to 10-year-olds.

By Natalia Mesa
11 June 2026 | 5 min read
Photo collage of Tempest McDonald.

When autistic kids grow up, Chapter 2: “You need to go to college”

With just a high school equivalency degree and struggling as a single mother, Tempest McDonald is forced to shift her priorities.

By Brady Huggett
11 June 2026 | 28 min listen