Archive for eeg neurofeedback

Binaural Beats Explained – How They Are Created And How We Perceive Them

We are all aware that an unborn child is capable of hearing. Our sense of hearing begins long before our sense of vision. As such, sound becomes a powerful form of stimulation for achieving desired brainwave states. Sound stimulation can come in many different forms. Some of the most common include: surf or pulsed white noise, pulsed tone, white noise and tone combined, pulsed chord, binaural beats, dual binaural beats and white noise with either binaural beats or dual binaural beats.

Nearly all light and sound instruments are capable of generating white noise. You know that fuzzy sound your television makes when you are between channels? Or the sound rushing water makes as it flows by you? That’s what pulsed white noise sounds like. Pulsed tone is just like white noise except a pitch is utilized. Your light and sound instrument should have the ability to let you adjust the pitch.

Combining pulsed tone to pulsed white noise is often used in “entertainment” sessions for creating special sound effects. A pulsed chord is basically the combination of two pulsed tones that are set apart at musical intervals.

A binaural beat is the combination of two audio frequencies or tones. One tone is directed to the left ear while the other tone is directed to the right ear. Say the left ear is receiving a tone of 180Hz and the right ear is receiving a tone of 190Hz. What the brain actually “hears” is 10Hz, which is the difference between the two and is known as the offset frequency. Dual binaural beats are created simply by combining two totally independent binaural beats. The resulting four channels of audio beats work together to generate several offset frequencies. The resulting frequency variations are very dynamic and complex, and have become the ideal method for maximizing brainwave entrainment. In fact, dual binaural beats are so effective that listeners can utilize stereo speakers rather than headphones and still receive the full effect. White noise is sometimes combined with either binaural beats or dual binaural beats. This method is limited, however, to session designs targeting relaxation and meditative states.

Phase settings for pulsed tone and white noise are connected to the light settings. By combining sound with light, you can utilize eight different phase settings: in phase, out phase, cross phase, sound out phase with lights in phase, sound in phase with
lights out phase, clockwise motion, counterclockwise motion and front/back phase. All phase settings are rather self-explanatory and are described in more detail in the owners manual of your light and sound instrument. Phase settings with dual binaural beats
involves a little math and some experimenting. For information on creating sessions utilizing binaural and dual binaural beats, see “Mind States / An Introduction to Light & Sound Technology” by Michael Landgraf of Mindmachines.com.

Left Channel On / Right Channel On

I I

Standard In-Phase

Left Channel On / Right Channel Off

I O

Standard Out-Phase

Left Light On / Right Light Off Left Light Off / Right Light On

Left Sound Off / Right Sound On Left Sound On / Right Sound Off

I O O I

O I I O

Cross Phase Light and Sound Stimulation

Both Light Channels On Both Light Channels On

Left Sound On / Right Sound Off Left Sound Off / Right Sound On

I I I I

I O O I

Sound Alternating with In-Phase Light Stimulation

Left Light On / Right Light Off Left Light Off / Right Light On

Both Sound Channels On Both Sound Channels On

I O O I

I I I I

Sound In-Phase with Alternating Light Stimulation

I O O I O O O O

O O O O O I I O

Clockwise Light & Sound Stimulation 1=On O=Off

I O O O O O O I

O O I O O I O O

Counterclockwise Light & Sound Stimulation 1=On O=Off

I I O O

O O I I

Front / Back Light & Sound Stimulation

 

EEG Neurofeedback or Mind Machines – Which is Right for You?

EEG Neurofeedback

EEG Neurofeedback is the voluntary regulation of brain wave activity. It is a learned response, with applications including the modulation of arousal levels, regulating your sleep/wake cycles, dealing with cognitive processes, processing sensory information, correcting inappropriate motor responses, controlling moods and emotions and helping deal with memory issues.

EEG Neurofeedback

EEG Neurofeedback

Here are two main applications within the EEG neurofeedback discipline: the first is Alpha and Theta training, which centers on relaxation and improved creativity. New research also indicates these EEG protocols can deal with overcoming the effects of alcoholism. The second application deals with Sensorimotor Rhythm (SMR) and Beta training. These protocols are generally aimed at improving mental functioning and the remediation of manifest deficits, such as for symptoms of epileptic and ADHD behaviors.

Those 2 paragraphs were my initial introduction to what EEG neurofeedback could accomplish. That was back in 1992. Since then a plethora of information has been published that gives credence to the successes of applying EEG neurofeedback in a multitude of ways (refer to issues of the AVS Journal).

But allow me to backtrack a bit.

I must give credit to Drs. Siegfried Othmer and Jerry Cunningham for making me aware of EEG technology and allowing me to learn about utilizing their equipment. Yes that was quite a few years ago, but their generosity sparked my interest in this young, yet exciting new field. Truth be told, I felt like a lab animal for those first 3 ten-hour days of instruction, as I soon realized when they uttered the words ?I wonder if?? meant I was the target of their thoughts. Thankfully, those two pioneers in this field were medical professionals and used protocols that when connected to the EEG neurofeedback system, made me feel more like a little kid at an amusement park, I could feel/sense my mental, emotional and physical states reacting in a different, more positive way.

Given time, I actually felt like I was contributing to their conversations rather than being the one person always hooked up to their EEG system ?to see what happens?. Either way I didn?t really care. On the one hand I was listening to 2 very respected professionals and on the other was able to experience sensations I?d never realized was possible.

One day we were comparing EEG protocols when the topic of adding adjunctive modalities into EEG neurofeedback sessions came up, with the goal of helping their clients achieve more quickly the targeted brainwave frequency of a session, theoretically enabling the client to proceed in their progress faster than normally believed.

This led to incorporating EEG Spectrum?s EEG Neurofeedback System with light and sound mindmachines, sound-only generators, an audio/visual mixer and the Symmetron motion platform (complete with 7-degree front/back pitch, 360-degree orbital movement and two transducers beneath the mattress for binaural beat tactile stimulation.

Once everything was connected, we were ready to do some serious brainwave research, or in my case, observing how we could enhance the effectiveness of EEG Neurofeedback sessions. One element was missing. For Alpha ? Training, closed-eye lightframes worked wonders. But a different type of lightframe was needed for SMR training. The solution was developing an open-eye style lightframe. I credit Jeff Labno for coming up with that idea. The result? EEG Neurofeedback became an all-encompass method for positive brain wave training. The proof was seeing the therapist?s monitor: increased entrainment ability emanating from the readout of the client?s brainwaves.

One hurdle remained, however. For prolonged EEG neurofeedback sessions, a different form of audio stimulus was needed. The mind is capable of foretelling what frequencies are going to be coming, which could lead to a loss of interest and decrease the effects of entrainment. Sine waves: boring. Binaural beats: decent but limited in design. Dual independent binaural beats: perfect. The human mind needs more than a single tone to remain entrained for a prolonged period of time. Binaural beats work, but are limited in designing entraining frequencies. Dual independent binaural beats are quite different. By using 4 distinct frequencies in a variety of ways, the mind maintains prolonged interest, with the effect of remaining entrained by the stimulation and thereby receiving a greater quality session. The result? You progress with your training faster.

EEG Neurofeedback is an excellent modality for treating symptoms sans pharmaceutical medications, and more. And there are highly qualified medical professionals that are making great strides in this field. Drs. Tom Collura and Rayma Ditson-Sommer to name two. Not to be different or aggravate professionals that I have the utmost respect for, but I have found implementing EEG Neurofeedback in a different way better suits my approach.

After performing several hundred hours of EEG Neurofeedback sessions on clients (and here I must add that Dr. Jerry Cunningham was my supervisor), I began to observe certain tendencies during the EEG sessions. For example, if the audio stimulation being used was generated in a synchronized manner, the client?s ability to achieve the targeted brainwave frequency was enhanced, and when given alternating pulsed stimulus, the ability to achieve the target frequency was inhibited. Humm? There were plenty of other tendencies happening, but this one intrigued me the most.

So EEG Neurofeedback sessions show the therapist just what is occurring in particular parts of their client?s mind. That?s a good thing. But the amount of sessions needed before any improvement can be observed with their client(s) can often exceed over twenty appointments. Given the cost of just one session means multiple sessions can be rather expensive. That?s really not a good thing.

As mentioned earlier, many strides have taken place in the field of EEG Neurofeedback. Better instruments, more sensitive readouts, remote use of EEG units, and hopefully you are sitting down for this: some insurance companies actually cover EEG Neurofeedback treatment.

But for me, personally, after years of utilizing EEG Neurofeedback, light and sound mind machines, tactile stimulation and various other modalities, I find EEG treatment to be unnecessarily costly and downright slow in rectifying mental, emotional and physical ailments. I prefer specially designed sessions built into light and sound mindmachines. They are better accepted by my customers and clients as these machines cost far less than EEG equipment, can be used almost everywhere at your own convenience, with goals being met far faster than a multitude of EEG sessions. And consider this: for the price you pay a therapist to conduct your 20 or more EEG sessions, you can purchase your own EEG system, with training! For an effective mind machine that would meet your specific needs, they range in price from $200 to $600. For the correct EEG neurofeedback system, far more. Big difference!

But EEG sessions showed me several idiosyncrasies that assisted in making light and sound mindmachines produce more effective sessions. That ?in sync / alternating stimulus? observation was just one.

Today, I find the best use for my EEG system is to function as a form of real-time documentation of how effective and entraining a mindmachine session actually is. When I test a light/sound session and view it on the EEG monitor, I get an actual idea of how entraining a mindmachine session is, or isn?t. If the EEG readout illustrates the session?s entrainment qualities, that session is a keeper. If the readout shows very little entrainment ability, then the session is deleted. In short, for me, nothing beats an EEG neurofeedback system for documenting the effectiveness of a light and sound mindmachine session.

Copyright Mindmachines.com / Granada Hills, CA / Nov. 18, 2011  All Rights Reserved

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