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Definition: Ultradian Rhythm
In general terms, ultradian rhythm means a cycle or pattern that cycles or repeats in less than a day.
In the psychological context it refers to the repeated switching
of brain hemispheric dominance, from left brain to right brain, occuring
about every 90 minutes, both during waking hours and sleep.
The left hemisphere is more specialised for linear, logical thought and
communication, and the right is more active when we are relaxed, dreaming
and in hypnosis.
The switchover to right brain dominance, which lasts about 20 minutes,
is the body and mind's natural time for recuperation, boosting the immune
system and improving clarity of thought. During times of right hemisphere
dominance people commonly report that they feel more sleepy, or dreamy,
or just notice slowing down.
Work by Ernest Rossi and other researchers has shown that taking a 20
minute break at this time can convert stress into what he called the Ultradian
Healing Response, which can prevent accidents through human error, improve
creativity and performance and can relieve depression,
stress and anxiety.
Further information
* Ultradian
Rhythms and Hypnosis
Find out about the relationship between ultradian rhythms and hypnosis.
* The
20 Minute Ultradian Healing Response
An interview with Ernest Rossi, describing the benefits of understanding
ultradian rhythms.