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Related to seizure threshold: ataxia
the amount of stimulus necessary to produce a convulsive seizure. All humans can have seizures if the provocation is sufficient.
The level of neurological stimulation capable of precipitating a seizure.
See also: threshold
1. the sudden attack or recurrence of a disease.
a seizure brought on by sound.
an attack of epilepsy.
see partial seizure (below).
see grand mal seizure (below).
grand mal seizure
one with no localizing signs. After a brief period of restlessness, there is unconsciousness, generalized muscular activity, excessive salivation, chewing activity, opisthotonos, running movements, and often urination and defecation. The most common type of seizure in dogs and cats.
see Jacksonian epilepsy.
one restricted to a focus in the brain; signs correspond to the area affected, e.g. motor activity of an isolated area or limb, hallucinations such as fly catching, apparent blindness, behavioral abnormalities, etc. Called also focal seizures.
petit mal seizure
a mild, very brief generalized seizure. See also petit mal.
a seizure brought on by light.
motor seizures accompanied by a psychic stage. There are hallucinations, salivation, pupillary dilatation, mastication, fecal and urinary excretion, and wild running. Seen in dogs with lesions in the pyriform lobe or hippocampus and from poisoning with agenized flour (canine hysteria). Called also running fits.
the level of stimulation at which a seizure is precipitated.
one in which the muscles are rigid.
alternating tonic (rigid muscles) and clonic (jerking of muscles) phases; a grand mal seizure.