Sleep Signals Mark Resilient Mice
2026-09-17
Resilience appeared before adversity. Mice later classified as resilient already showed tighter coordination between neuronal OFF-periods and slow-wave activity in the prelimbic cortex before social stress began. That result unsettles a familiar assumption: coping may not be built only after a blow. Some brains seem to enter hardship with a distinct sleep-state architecture already in place.
This is not mere noise. During NREM sleep, neuronal silence in resilient mice acted less like a blackout than a process scheduler, selectively timing pauses across a working system. The scientific names matter: neuronal OFF-periods and slow-wave activity were more closely coupled before stress, suggesting that local cortical dynamics may expose a biological disposition toward resilience.
The post-stress shift is sharper still. After social defeat, resilient mice displayed a distinct reorganization of neuronal silence during NREM sleep, linking behavioral outcomes to local sleep physiology. If such signatures can be mapped across circuits, sleep recordings could become pre-stress risk maps rather than post-crisis paperwork. The sleeping brain may be running its defenses long before the alarm sounds.
Loading...
