Fish Sleep a Lot Like Us. (They Even Nap.)
By tracking eye movements in zebrafish, researchers identified four different types of sleep, analogous to the complex sleep patterns of humans and other animals.
Scientists have discovered that zebrafish exhibit four distinct types of sleep, mirroring the complex sleep cycles observed in humans and other mammals. By monitoring the eye movements of these fish, researchers were able to categorize these different sleep patterns. This finding suggests that sleep in fish is more intricate than previously understood, with some stages resembling human REM and non-REM sleep.
This research deepens our understanding of sleep evolution and its fundamental biological importance across diverse species.
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