Published in Current Biology · View the paper (DOI)
Researchers observed reduced pulsing activity at night and delayed responses to stimulation in the upside-down jellyfish Cassiopea. The findings suggest that jellyfish do indeed sleep, but the study also raises more questions about the origin of sleep and its relationship with neural systems.
Coverage from 2 institutions
- Signs of sleep seen in jellyfish Howard Hughes Medical Institute · Sep 21, 2017 · first to report
- The surprising, ancient behavior of jellyfish California Institute of Technology · Sep 21, 2017