This article is from the Epilepsy FAQ, by Andrew Patrick (andrew@calvin.dgbt.doc.ca) with numerous contributions by others.
The medical community has not determined if things such as
transcendental meditation have any real effect on Epilepsy. It has been
shown that when people know what is happening at a given moment, some
can influence the automatic processes of the body. With biofeedback,
some people can moderate and possibly change certain functions thought
to be involuntary, such as the rhythm of their brain waves, blood
pressure, heart rate, etc. The significance of this for Epilepsy is not
known.
 
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