Scientists Discover How a Brainless Animal Built a Sensory Proto-Brain
TL;DR: A 2026 study in Science Advances mapped 17 cell types in a ctenophore sensory center, offering a detailed view of how a simple nervous system integrates multiple sensory inputs. Key Findings 17 cell types identified: The aboral organ contains approximately 900 cells organized into 17 structurally and functionally distinct types—more neural diversity than expected …
