How is it possible to move in the desired direction without a brain or nervous system? Single-celled organisms apparently manage this feat without any problems: for example, they can swim towards ...

It was previously thought that learning behaviours only applied to animals with complex brain and nervous systems, but a new study has proven that this may also occur in individual cells. As a ...

Researchers propose that placozoans, one of the simplest kinds of animals, may contain the blueprint for the neurons of more complex creatures.

New animal family tree raises questions about the origin of nervous systems Sponges are more closely related to us than some animals with a nervous system.

But their mostly see-through bodies cloak a nervous system unlike that of any other known animal, researchers report in the April 21 Science.

The finding might help explain how many other single-celled organisms engage in extraordinarily sophisticated behaviours despite having no brain or nervous system .

Fossils Solve a Nervous System Mystery in Molting Animals Learn about the wide-ranging Ecdysozoa group of animals and how scientists solved the curious case of their nervous systems' structure.

The single-celled protozoan Euplotes eurystomus achieves a scurrying walk by coordinate its microscopic uses a simple, mechanical computer instead of a brain like most animals, UCSF researchers found.

Strange sea creatures called ctenophores have a fused nerve net where scientists expected to see synapses. Did they evolve their nervous system separately from other animals?