Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched. It is often observed in conditions like multiple sclerosis, stroke, and cerebral palsy. Clonus can be diagnosed by ...

Clonus reflex is a set of rhythmic, involuntary muscle movements. It is a neurological condition that affects the nerve cells that control muscle movements. Damage to the nerves, as in clonus, causes ...

This coral keeps time without a brain, showing how distributed nerve nets can synchronize movement across an entire animal.

Biologists have unraveled how a 'heart' in the fruit fly's head functions. The researchers discovered the fly's head-heart beats much like a human's: Its rhythmic pulses are automatically generated by ...