"But let us come to the description of the convulsive attack itself. When the animal is taken from the apparatus, it is generally in severe tonic convulsions, the four feet are still, the trunk is bent back or a little to one side. Attacks (are) so violent that one can lift the animal by a single foot, stiff as a piece of wood" from Bert, 1943

Unlike other forms of inducing seizures in animals, convulsions produced by exposure to high levels of oxygen are completely reversible.