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What
is EEG Biofeedback?
EEG Biofeedback is a learning strategy that enables persons
to alter their brain waves. When information about a person's own
brain wave characteristics is made available to him, he can learn
to change them. You can think of it as exercise for the brain.
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What
is it used for?
EEG Biofeedback is used for many conditions and disabilities in
which the brain is not working as well as it might. These include
Attention Deficit Hyperactivity Disorder and more severe conduct
problems, specific learning disabilities, and related issues such
as sleep problems in children, teeth grinding, and chronic pain
such as frequent headaches or stomach pain, or pediatric migraines.
The training is also helpful with the control of mood disorders
such as anxiety and depression, as well as for more severe conditions
such as medically uncontrolled seizures, minor traumatic brain injury,
or cerebral palsy.
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How
is it done?
An initial interview is done to obtain a description of symptoms,
and to get a picture of the health history and family history. Some
testing may be done as well. And the person does the first EEG training
session, at which time we get a look at the EEG. This all may take
about two hours. (The details may differ among the various affiliate
offices. In some offices a full brain map, or quantitative EEG,
is routinely obtained, which may require a separate office visit.
Or more extensive testing may be done.) Subsequent training sessions
last about 40 minutes to an hour, and are conducted from one to
five times per week. Some improvement is generally seen within ten
sessions. Once learning is consolidated, the benefit appears to
be permanent in most cases.
One or more sensors are put on the
scalp and one on an earlobe using a washable paste. There is no
Pain, it is non-evasive. The brain's own tiny electric signals move
through the gold cups into wires and into a computer. The computer
changes the electrical impulses from the child's scalp into moving
pictures. The child watches the TV movie and by using his mind and
not a joystick, the child controls the play of the game. When the
child concentrates he scores more points in the game. When the child
daydreams his game-piece slows down. Anyone who plays the game quickly
learns to strenghthen the positive brain signals and to diminish
the negative signals.
After several sessions the child learns how to
make strong positive brain waves. The whole process is easily learned
and there is no pain or discomfort. Kids love the game. Within three
weeks a child's behavior can be dramatically normalized.
The number of sessions needed vary per child.
A boy may need 40 to 60 sessions to eliminate ADD and if he is also
very hyperactive he may need 60 or more sessions. Severe brain injury
responds well, but more slowly. Our most remarkable success was
an airline pilot who got rid of his severe pain from Spastic (Irritable)
Bowel Syndrome in four sessions! I spoke to him just the other day
and it has been several years since his last bowel pain. In 20 years
of providing this training I have never had to retrain a child or
adult. It's like walking, once you learn how you just keep on walking.
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What
disorders have clinical evidence?
What
results do we obtain?
In the case of ADHD, impulsivity, distractibility, and hyperactivity
may all respond to the training. This may lead to much more successful
school performance. Cognitive function may improve as well. In
several controlled studies, increases of 10 points in IQ score
were found for a representative group of ADHD children. And in
two clinical studies, an average increase of 19 and 23 points
was demonstrated.
Behavior may improve in other ways
as well: If the child has a lot of temper tantrums, is belligerent,
and even violent or cruel, these aspects of behavior may come
under the child's control.
In the case of depression, there
can be a gradual recovery of "affect", or emotional responsiveness,
and a reduction of effort fatigue. In the case of anxiety and
panic attacks, there is gradual improvement in "regulation", with
a dropoff in frequency and severity of anxiety episodes and panic
attacks until the condition normalizes.
In the case of epilepsy, we observe
a reduction in severity and incidence (frequency of occurrence)
of seizures. The dosage of anticonvulsant medication may ultimately
be reduced, and side effects of such medication may diminish.
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Can
a successful outcome be predicted?
It is not possible to predict with certainty that training will
be successful for a particular condition. But for the more common
conditions we see, a reasonable prediction of outcome is usually
possible. More important, however, the effectiveness of the training
can usually be assessed early in the course of training. For most
conditions, there are no known adverse side effects of the training,
provided that it is conducted under professional guidance.
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Why
does this training procedure work?
The brain is amazingly adaptable, and capable of learning. It
can also learn to improve its own performance, if only it is given
cues about what to change. By making information available to
the brain about how it is functioning, and asking it to make adjustments,
it can do so. When the mature brain is doing a good job of regulating
itself, and the person is alert and attentive, the brain waves
(EEG) show a particular pattern. We challenge the person to maintain
this "high-performance", alert and attentive state. Gradually,
the brain learns, just like it learns anything else. And like
with other learning, the brain tends to retain the new skill.
We observe that if the EEG is not
well-behaved under these circumstances, there may be adverse impacts
on learning ability, on moods, on sleep, and on behavior. With
training, these may be gradually brought under control, along
with normalization of the EEG.
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What
does EEG Biofeedback look like?
|
| The therapist computer is usually
positioned behind the client. This enables the therapist
to monitor the client's EEG at any time during the session
without disturbing the biofeedback.
| A single electrode is placed on the
scalp (above the motor strip, typically) using gel or paste
and two other electrodes are attached to the earlobes. Most
clients recline during training.
| The game computer is placed a few
feet away, directly in front of the client. The client interacts
(only using her EEG) with the game computer for the next
30 minutes. |
|
| Each display contains
four EEG data streams (below each stream are text and average
data values). The top line, slightly squiggly, is the person's
entire EEG recorded from the scalp by the single active
electrode. The three wavy lines below show activity in three
separate EEG frequency bands or rhythms -- here, theta,
SMR, and high beta bands. The client's goal is to increase
certain EEG frequency bands (e.g., SMR) while decreasing
others (e.g., theta & high beta).The patient monitors her
EEG frequency band activity NOT as wavy lines on the therapist
machine, but as elements of a game on the game computer.
Each frequency band appears as a colored rectangle which
grows larger or smaller in response to her brain wave activity.
| With her brainwaves
she is playing the game called "Islands." Frequency band
activity is displayed at the bottom of the screen -- two
square "inhibit" boxes on either side on a large "enhance"
rectangle. At this instant, she is doing quite well, inhibiting
or reducing the activity of the bands represented by purple
& yellow (at the moment, mere dots in each corner of the
screen). She has increased her SMR activity to a point where
it overflows the middle (blue) rectangle. As long as she
keeps this up, she is rewarded in the game with visual and
auditory stimuli. During the 30 minute session, she will
work to keep purple and yellow small and make blue large
as long as possible. A hundreds of times she may need to
alter her brain activity in order to achieve a brain state
which scores the most points. For every half second that
her brainwaves stay in the desired state or "zone", she
scores another point, an additional seagull appears in the
sky (top of screen, barely visible), a new stripe segment
is drawn on the highway (middle of screen), and a beep sounds
to announce it all. If or when she attains 500 points, the
volcano (middle left) will erupt!
|
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ASKED QUESTIONS
How
long does training normally take?
EEG training is a learning
process, and therefore results are seen gradually over time.
For most conditions, initial progress can be seen within about
ten sessions. Initial training goals may be met by twenty sessions,
at which time the initial retests are usually performed. In
the case of hyperactivity and attention deficit disorder, training
is expected to take about forty sessions, or even more in severe
cases. Teeth grinding usually responds in twenty sessions. Some
symptoms of head injury often respond in less than twenty sessions
(quality of sleep; fatigue; chronic pain), whereas others may
require longer training before they show an initial response
(memory function, for example).
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ASKED QUESTIONS
How
frequent should the training sessions be?
The sessions should be regular and frequent. Daily sessions can
be very beneficial as well. I find doing up to 4 sessions a day
for 3 weeks is the best way. You can have a normal child in 3
weeks. If this is not possible, then doing at least 2 sessions
a week will still provide good results just over a longer period
of time.
Sessions
are generally done in 20 session increments. After each 20 session
increment a TOVA (Test of Variable Attention) may be given to
see the benefits of training to that point.
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ASKED QUESTIONS
Is
EEG biofeedback covered by insurance?
Many medical and psychological insurance plans now cover biofeedback
for various conditions. Some require co-payments. Other plans
have annual caps. A prescription for the training, along with
a diagnosis, may be required from a physician under the medical
part of the plan, or from a licensed psychologist under the mental
health services part of the plan. Medicare pays for EEG biofeedback
for some conditions.
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ASKED QUESTIONS
My
doctor takes a dim view of biofeedback. What can I tell her?
Dr. Von will be glad to send your Dr. information on biofeedback
and some websites that offer a lot of good information. If requested,
Dr. Von will call your Dr. to discuss. We are finding more MDs
are being receptive to parents trying biofeedback rather than
putting their children on drugs.
Some will cover biofeedback
with a prescription from and MD, along with a diagnosis.
Lubar, J.F. and Bahler,
W.W. (1976). Behavioral management of epileptic seizures following
biofeedback training of the sensorimotor rhythm. Biofeedback
and Self-Regulation, 1, pp.77-104.
Lubar, J.F. and Shouse, M.N (1976). EEG and behavioral changes
in a hyperactive child concurrent training of the sensorimotor
rhythm (SMR): A preliminary report. Biofeedback and Self-Regulation,
1, pp.293-306.
Lubar, J.O. and Lubar, J.F. (1984). Electroencephalographic
biofeedback of SMR and beta for treatment of attention deficit
disorder in a clinical setting. Biofeedback and Self-Regulation,
9, pp.1-23.
Shouse, M.N. and Lubar, J.F. (1979). Operant conditioning
of EEG rhythms and Ritalin in the treatment of hyperkinesis.
Biofeedback and Self-Regulation,4, pp.301-312.
Tansey, M.A. (1993)
Ten-year stability of EEG biofeedback results...
www.snr-jnt.org/journalINT/JNT92-4)6.html
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QUESTIONS
How much does the training
cost?
The cost of training is $75 per session;
however if the client pays in advance for a 20 session increment,
the cost is $50 per session or $1000.
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