Planarians (flatworms) can be “trained” to contract in response to a flash of light and an electrical current. If cut in half, both halves regenerate into complete animals, but only the “head” remembers the training
Planarians are pretty hype. They don't have a true "brain," just a "ganglia," which is a clump of nerves located at one end of their body, along with a primitive pair of light-sensitive "eyes." If you flash a light on them, and then pass a slight current through the water, they contract their bodies in response. After repeating this about 150 times, they begin to contract in response to just the flash of light.
oooh that’s so cool
:meow-floppy:
Planarians are pretty hype. They don't have a true "brain," just a "ganglia," which is a clump of nerves located at one end of their body, along with a primitive pair of light-sensitive "eyes." If you flash a light on them, and then pass a slight current through the water, they contract their bodies in response. After repeating this about 150 times, they begin to contract in response to just the flash of light.