Although logical thinking is often attributed to the left hemisphere and intuitive and creative activities are seen to be located in the right hemisphere, the Mind Mirror EEG in most people is quite symmetrical.
Both hemispheres are very well connected, and even though there are brain activities that can clearly be located in one hemisphere (e.g. speech), most of the time both hemispheres are active. The Mind Mirror display shows the brain waves according to their frequencies from top (38 Hz) to bottom (0.5 Hz).
The strength of the signal (amplitude) is determined in how far from the middle the curve reaches outward. Gamma brainwaves (100 – 38 Hz) were detected later than the other brainwaves, less is known about them so far. They have been seen in states of peak performance (both physical and mental), high focus and concentration and during mystic and transcendental experiences.
A lot of research is currently being done on gamma brainwaves in the 40 Hz range during meditation. One of the characteristics of gamma waves is a synchronisation of activity over wide areas of the brain.
Gamma brainwaves are not easy to detect because of their low amplitude and can only partly be displayed on the Mind Mirror screen. Sometimes they may be seen as a narrow frequency band at 38 Hz.
|Beta waves (38 – 15 Hz) are the brainwaves of our “normal”waking consciousness, of our outward attention, of logical, conscious and analytical thinking. High frequency beta (“splayed beta”) is seen with restlessness, stress, anxiety, panic or while our inner critic or commentator is active. Splayed beta can be differentiated from the low frequency beta of the awakened mind, when thinking feels clear, alert, creative and to the point.|
|Alpha brainwaves (14 – 8 Hz) are seen when we are in a relaxed state, daydreaming or visualizing (“sensualising” seems to be more appropriate as imagination in all senses – hearing, kinesthetic, smell, taste etc. – stimulates alpha waves. Your visual sense may not necessarily be the strongest for you. Some people rather feel an inner knowing). We need alpha waves as the bridge to the lower frequencies of the subconscious (theta), if we want to remember the content of our dreams or our meditation, or if we want to retrieve information from our subconscious. For this reason alpha is especially important in combination with other brainwaves.|
|Theta (7 – 4 Hz) represents the subconscious. We see theta during dream sleep (REM sleep), meditation, during peak experiences and creative states. In theta we find unconscious or suppressed parts of our psyche as well as our creativity and spirituality. Theta images are usually less distinct and colorful than alpha images, sometimes of a blueish color, but they often feel more profound and meaningful. As long as we only produce theta brainwaves, their content will stay inaccessible to our waking mind. We need alpha to bridge the gap between theta and beta brainwaves to consciously experience or remember theta content.|
|Delta brainwaves (3 – 0.5 Hz) are the brainwaves of the lowest frequency and represent the unconscious. If we only produce delta we will find us in dreamless deep sleep, but we also see delta in various combinations with other brainwaves. They may then represent intuition, curiosity, a kind of radar, hunches or a “feeling” for situations and other people. Delta is often seen with people who work in therapeutic environments or professions and with people who have had traumatic experiences and have developed a “radar” for difficult situations.|
|“Normal” waking state (Gurdjieff called it “waking sleep”): beta brainwaves alone or in combination with delta (hour glass pattern). Please note that the amplitude is highest at 38 Hz, the curve is open at the top. This “splayed” beta is another form of beta than the low frequency beta of the awakened mind.|
|Meditation: alpha and theta in combination, delta may also be present. Both alpha and theta are necessary here: without alpha we would not be conscious during the meditation or remember its content, if theta is lacking we experience a lively and colorful imagination but without the depth, profundity or insight of theta.|
|Awakened mind: You will produce an awakened mind pattern first described by Maxwell Cade if you add low frequency beta to the meditation pattern. You will then be able to tap into the intuition of delta, the creative inspiration, personal insight or spiritual consciousness of theta, the relaxed, detached imagery of alpha and the conscious processing of thoughts in beta, and all of this simultaneously!!|
It has been documented that our Electroencephalography (EEG) dimensions in humans increase with age and time, and also throughout human evolution. EEG is the recording of electrical activity along the scalp. It measures voltage fluctuations resulting from ionic current flows within the neurons of the brain. This is how they are able to measure the different brain waves and the different frequencies they dish out.
Not long ago, researchers led by Richard Davidson, a neuroscientist at The W.M. Keck Laboratory for Functional Brain Imaging and Behavior teamed up with a number of monks and volunteers. The Dalai Lama even dispatched eight of his most accomplished practitioners to Davidson’s lab to have them hooked up for EEG testing and brain scanning. These monks come from traditions of meditation for an estimated 10,000 to 50,000 hours, over time periods of 15 to 40 years.
The monks were fitted with a net of 256 electrical sensors and asked to meditate for short periods, and Davidson was particularly interested in measuring gamma waves, the highest frequency and most important known electrical brain impulses. The results showed that the electrodes picked up much greater activation of fast moving and usually powerful gamma waves in the monks (3). The movement of the waves through the brain were far better organized and coordinated.
Researchers suggest that the very existence of this synchronized gamma indicates that a consciousness experience is occurring. The gamma wave state is the most sensitive than any other state of consciousness measurable. Gamma brainwaves are associated with intelligence, compassion, self control and feelings of natural joy.
So what can we take away from these discoveries? The fact that brain activity during the lucid dreaming experience radiates a gamma frequency is extremely significant. It shows us that our brain is vibrating at a higher frequency, and functioning at a more clear, coherent and higher state of consciousness than it is when we are awake. Although the size of the human brain has remained unchanged for 200,000 years, brain wave frequency and states of consciousness have changed over time
Sources : The Mind Unleashed