A speck learns to fear blue light.
Dactylobiotus dispar can be classically conditioned to curl into a tun when blue light predicts a mild electric shock.Tardigrades Can Learn: Memory in a Mini Brain
Tiny brain. Real wiring.
Tardigrades have paired ventral nerve cords, leg ganglia, and a cerebral ganglion with eyespots and clavae—yet only about 1000 cells in all.Tardigrades Can Learn: Memory in a Mini Brain
