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Julia, can you hear me?
Julia grumbled as to hear. She was not unconscious completely, but she was almost like that. In other words, she was exactly in the same position that the doctor wanted. She had been daydreaming. Twersky nodded his head while he was looking at biological indicators. Julia’s teta waves were dominant at the moment. In other words, the girl was at a place between sleep and sleeplessness. Teta waves were about dreams, fantasies and creativity.
After a while, when the frequency and dimension of teta waves decreased, delta waves began to be dominant. Ratio of delta waves was lower than teta waves. They were only 2 hertz comparing with others. But their volume was more than others. Julia was in a very deep sleep at the moment but she wasn’t dreaming. Her subconscious stepped in at last…
Adam Fawer is a master author and he has imaged his mastership to his writing as well. This short episode which was between patient and doctor was in the novel of Adam Fawer named Improbable. It was being mentioned about brain waves with this dialog in the book.
These waves occur as a result of emotions and thoughts which are being done during daily life. In other words, these waves become active according to the positions of our brains. I am saying as these waves, because there are 4 types of brain waves. They are alpha, beta, teta and delta.
One of the brain waves is alpha and it is being seen when we are comfortable and in peace. This wave is monitored between 7.5 – 12 hertz/second and it appears and disappears rapidly. In other words, it is not continuous. When alpha waves are dominant, we are more successful on works that we do. It was thought that alpha waves were more intensive when Albert Einstein was solving the problems of Complex Mathematics. Because when this brain wave is more intensive, there is an empty brain. This does not mean to be unconscious or sleepy, but it means that when brain is in that position, it can perceive events and problems ideally. Richard Caton, an English physician, discovered electrical current of brain waves in 1875.
Hans Berger, a German psychiatrist, wrote his first report about alpha rhythms in 1929. He began his works in 1925 and he pointed out that electrical current of brain waves could be recorded on papers as graphics. He called this method electroencephalogram (EEG).
Another brain wave is beta and it is being seen when we are busy. This wave is monitored between 13 – 30 hertz/second and they are fast, quick and uneven waves. When we are busy with a very intensive meeting, beta waves are seen. Stress, tension and anger occur when the frequency of beta waves increase. When this brain wave is more intensive, solutions can be produced for problems. This brain wave is also called as Life Wave and it can be seen in some positions like dynamism and concentration.
Now it is teta wave turn. When this wave is dominant, artistic skills are at top level. In other words, it is Skill Wave. It is monitored when there is no stress. This wave is between 4 – 8 hertz and it is seen before we pass over the top level of learning. Teta waves are at top level during the studies about artistic field, especially art and music, but alpha waves are at minimum level.
Teta waves are about creativity together with delta waves. These waves provide us to focus on our brains and it is thought that by this way, we can produce creative ideas. These waves are very active when we are awake. Descartes had founded his ideas when he was in bed and in a dopey situation. In these times, delta waves are active and they are monitored between 0 – 4 hertz. They are monitored irregularly and when they are dominant, brain comes of outer world and it focuses on inside itself. Delta wave is dominant when we are unconscious, in deep sleep or our brain works at minimum level. When these waves are active, growth hormone is excreted. W. Gray Walter, an English scientist, is known as the discoverer of delta waves.
If we need to summarize, brain waves are observed according to the situations of our brains. While we are studying our lessons, beta waves are dominant. When we finish studying our lessons, alpha waves are dominant. Teta waves are dominant in the early times of sleep and delta waves are dominant during deep sleep.
Today, it is being dwelled upon a new brain wave. This brain wave is called as gamma and it is monitored with fast moves. It is thought that this wave is above 40 hertz.
We mentioned about types of brain waves, their histories and in which situations they are observed. If that is so, then can brain waves be used? What are the studies about this subject?