This event is a Atonic Seizure. Atonic seizures are characterized by a sudden loss of muscle tone, which can cause a person to fall to the ground. They are brief, usually lasting less than 15 seconds, and can occur while standing, walking, or sitting. Atonic seizures are caused by temporary changes in brain function. They usually begin in childhood and can continue into adulthood. Although the seizure itself doesn’t usually cause physical injury, the loss of control can lead to injury from falli