According to MedlinePlus, a seizure in humans is defined as «the physical findings or changes in behavior that occur after an episode
of abnormal electrical activity in the brain.»
Not exact matches
Absence seizures cause a short period
of «blanking out» or staring into space, due to brief
abnormal electrical activity in the brain.
They found that tissue with high levels
of epileptic
electrical activity was low in lactate and had higher levels
of creatine, phosphocreatine and choline, suggestive
of abnormal metabolism.
After two or more weeks
of recording the
activity, doctors program the device to specifically respond to these
abnormal signals by delivering imperceptible
electrical pulses to the brain that normalize the
activity.
This slowing down
of electrical activity put these hearts at greater risk
of dangerous
abnormal heart rhythms, such as atrial fibrillation.
A seizure is an
abnormal burst
of electrical activity in the brain.
ECGs record the
electrical activity of the heart and can measure and diagnose
abnormal rhythms
of the heart and identify a damaged heart.
However, in some patients an additional and
abnormal burst
of electrical activity can occur which causes a fit.
The type
of seizure produced depends on the location in the brain where the
abnormal electrical activity occurs.
Arrhythmias are caused by
abnormal electrical activity in the heart that affect the frequency, strength and regularity
of the heartbeats.
Like seizures, the
abnormal electrical activity responsible for heart arrhythmias can have a number
of causes, including genetic, with some breeds predisposed to them.