biology

Brown rats exhibit the intense sensory awareness and fragmented sleep patterns required for survival in the wild. For decades, our understanding of sleep has been confined to the sterile and controlled environments of university laboratories. We know how a laboratory rat sleeps in a plastic cage with regulated light and temperature, but we have remained […]

Iguana at rest, representing reptilian models in cross-species sleep rhythm research. When we observe a creature in deep slumber, whether it is a human in a clinical suite or a lizard perched on a desert branch, we are witnessing a biological process far more ancient than previously imagined. A recent cover story in Nature Neuroscience

Sleep patterns in wild black rats (Rattus rattus) were investigated under natural environmental conditions. In the world of sleep research, most insights are derived from pristine laboratories where animals are kept under artificial conditions with fixed light cycles, stable temperatures, and minimal environmental challenges. But how do animals sleep in their natural environments—where they must