alpha waves frequency

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When alpha brain waves are the dominant frequency in your brain, you will usually be feeling very relaxed, but aware. BiNaural Beats Nomenclature of the frequency and wavelengh bands used in telecommunications (PDF 464 kB) MOST RECENTLY PUBLISHED ... ALPHA, RSDN-20 By T. Jacobsen, (upd. The band power represents the magnitude of a specific frequency band. During sleep, alpha waves are replaced by beta waves. Alpha brain waves range from 9-14 cycles per second. There are four main frequencies of the human brain seen on scalp EEG, in increasing order: delta, theta, alpha and beta. Alpha waves also promote calming changes in the nervous system. Faster alpha brain waves are related to relaxed focused attention and a receptive learning state of mind. As more and more neurons are requited to this frequency, alpha waves cycle globally across the whole cortex. BiNaural Beats purposefully create a specific frequency in your brain in order to reach a specific state. Alpha Binaural Beats (Listen Now) Delta frequencies come with a very low-frequency difference of a minimum of 0.5 Hz which is best for … Alpha wave Theta Waves – (4 – 7.9 Hz) — Dreaming sleep (REM), this is the goal for meditation or self-hypnosis. Each of these brainwave states indicates a dominant frequency resonance happening between the neurons in our brains. They are affected by mental activity. FREQUENCY: Alpha brain waves oscillate at a frequency of 8 to 12 HZ. This aspect has become an important issue in the investigation of perceptual and cognitive processes (for recent reviews see, for example, [2,3]). Alpha waves in healthy, awake adults occur while resting with the eyes closed. Alpha waves are a type of brain wave that's active while you're resting, especially when your eyes are closed. Delta waves are the slowest of all five brainwave frequencies and range between 0-4 Hz. Find out about other brainwave frequencies, and find a brainwave frequency table in this article. Delta waves, which are between 0.5 and 4 hertz (Hz), occur during deep states of dreamless sleep. It usually radiates through this frequency. Alpha Waves – (8 – 13.9 Hz) — Relaxed, daydreaming and watching TV. When alpha waves are measured, such as by a sleep doctor, the measurement is generally taken from the occipital region of the brain, which is in the back of your head. The Alpha state (about 8-10Hz) occurs when brain activity slows just below the normal waking state of Beta (11-25hz). Beta Waves can be increased through Coffee, Energy Drinks, Flow; Alpha Waves (8 – 12 Hz) Alpha Brain Waves are dominant during quietly flowing thoughts, while you are in deep relaxation, or when you are slipping into a lovely daydream, or during light meditation. Each type of brainwave controls a variety of states of consciousness ranging from sleep to active thinking. Alpha: ~ 7.5 – 12.5 Hz. first stage of sleep. These types of brain waves receive in the name of Delta waves, Theta waves, Alpha waves, Beta waves and Gamma waves. For example: Our Flow State meditation prepares your mind … Alpha brain waves are a sign of relaxed activity in your brain. The specific ELF frequencies I was interested in studying are 6-10 Hertz. Alpha (7.5-14Hz): The Deep Relaxation Wave. Alpha Waves. As mentioned, alpha waves fall in the middle of the brain wave spectrum. Beginning in the 1960s, Alpha waves became popular with the invention of biofeedback machines. Theta waves measure between 4 and 8 Hz. 85% of adults have a resting Alpha rhythm between 9.5-10.5 Hz. It is identified as the best wave of decreasing stress and elevating mood. Occipital Lobe Alpha Brain Waves: This is the most widely researched type of alpha activity. Since alpha waves are linked with relaxed mental states, many experts believe increasing alpha activity may help reduce stress and anxiety, as well as help you stay relaxed. The study monitored the frequency and location of electrical brain waves through the use of EEG (electroencephalography). Alpha Waves. All types of alpha waves play an important role in our sleep-wake cycle. Alpha waves took center stage in the early 1960s and 1970s with the creation of biofeedback, a technique used to consciously alter brain waves using direct feedback provided by an EEG type of device. Alpha-band oscillations and two types of event-related amplitude responses. You experience alpha when engrossed in a movie, book or activity. Different binaural beats provide benefits in different states of mind. The rhythm of alpha waves may have a frequency between 8 and 13 Hz. Otherwise commonly known as “zero point” in conscious manifestation. The rhythm of alpha waves may have a frequency between 8 and 13 Hz. Alpha. The waking state with the eyes open is characterized by high-frequency (15–60 Hz), low-amplitude activity (~30 μV) activity. Alpha activity may spread to temporals and parietals in some people and this is considered normal. Alpha. Your brain produces alpha waves (8 - 12Hz) when you are awake but relaxed and not processing much information - such as first thing in the morning, just before you go to sleep, when you're daydreaming or practicing meditation (some scientists also claim aerobic exercise helps create alpha waves). For example: to specifically increase your memory retention, a 10Hz Alpha Wave frequency (which contributes to super-learning) needs to be created. Beta waves, which measure between 12 and 30 Hz, are the waves that occur during most conscious, waking states. This brain wave type is our gateway to learning, memory and intuition. 20/07//00) * STATIONS, ITU lic. The result is lower blood pressure and heart rate and lower levels of stress hormones that are conducive to a calm mind. SuperBrain Yoga is a simple technique that poses to increase intellectual capacity and sharpens both memory and concentration. It has been scientifically approved to help you energize your brain and enhance its sharpness and clarity. Alpha Waves. Depending on the frequency, waves can be categorised as delta (1–4 Hz), theta (4–8 Hz), alpha (8–13 Hz) (which is sometimes divided into alpha 1 (8–10 Hz) and alpha 2 (11–13 Hz)) and beta (more than 13 Hz). Slow Wave Sleep or SWS, is the deepest of sleep states and it plays a vital role in health and well being. Normal Occurrence of Alpha Waves. In this review, the focus is on alpha-band oscillations as the dominant oscillations in the human brain, with a mean frequency of approximately 10 Hz. Frequency. Appearances of alpha waves in the sleep electrencephalogram indicate physiological, brief states of awakening that lie in between wakefulness and sleep. Alpha waves. Alpha brain waves are one of the at least five types of electrical waves that allow our brains to function. Alpha waves have a slower frequency of 8-13 Hz, corresponding to a state of relaxation. Delta waves. first stage of sleep. Theta waves, which are between 4 and 8 Hz, occur during light sleep or deep relaxation. These brainwaves are associated with a state of relaxation. Recognizing the frequency of the waveforms is fundamental to interpreting EEG. Alpha is ‘the power of now’, being here, in the present. DIGITAL “ALPHA/BETA/GAMMA WAVES” FSV (VITALITY) Vibrational Support for Bioenergetic Harmonization —Remote bioenergetic support from 50 Frequency Specific Vibrations (FSV) via the Healy Aura/Resonance HealAdvisor Analyze App (blue dot app) only $20.00 USD ($50.00 Total Promotional Value). Another category of very high (30–40 … Frequency: 4-8 Hz; State: Creativity, insight, dreams, reduced consciousness; According to Professor Jim Lagopoulos of Sydney University, “previous studies have shown that theta waves indicate deep relaxation and occur more frequently in highly experienced meditation practitioners. Alpha waves are associated to a specific process and are mainly present when the eyes are closed and mainly blocked when the eyes are open. Alpha waves fit in … Alpha brain waves (8–13 Hz) may be considered a bridge from the external world to the internal world, and vice versa. Alpha waves (8 to 12 Hz) Alpha brainwaves are dominant during quietly flowing thoughts, and in some meditative states. If you've ever practiced meditation , yoga or even felt relaxed after a glass (or two) of wine, you've experienced alpha brain waves. Scientists have found that alpha activity increases significantly during Frequency. Alpha is considered the “power of now”, being here and in the present of the moment. The Beta waves are very low amplitude, and high frequency range between 13 and 30 Hz. ; Beta waves, which measure between 12 … When you relax and close your eyes these brainwaves are increased. When you are waking up in the morning or just beginning to drift off at night you are probably in a state of alpha relaxation. An alpha wave is an “electrical rhythm of the brain with a frequency of approximately 8 to 13 cycles per second that is often associated with a state of wakeful relaxation”.¹. There are four main frequencies of the human brain seen on scalp EEG, in increasing order: delta, theta, alpha and beta. Alpha state is a relaxed and usually meditative state. Good healthy alpha production promotes mental resourcefulness, aids in the ability to mentally coordinate, enhances overall sense of relaxation and fatigue. You are awake, but with your eyes closed. In this state you can move quickly and efficiently to accomplish whatever task is at hand. Alpha waves are maximal over the occipital region. There are 5 brain wave frequencies (Beta, Alpha, Theta, Delta and Gamma) and each frequency is measured in cycles per second (Hz) and has its own set of characteristics representing a specific level of brain activity, and a unique state of consciousness. Good healthy alpha production promotes mental resourcefulness, aids in the ability to mentally coordinate, enhances overall sense of relaxation and fatigue. However, this effect has only been established at higher doses than that typically found in a cup of black tea (approximately 20mg). Thereby, alpha waves should be generated, which help to bring the listener into a relaxed state. Your brain produces theta waves when you’re drifting … The alpha brain wave range contains a few different types of specific alpha waves. In order to determine the precise frequency of alpha waves as well as other neural oscillations, we implemented Power Spectral Distribution (PSD) graphs. An EEG would measure theta waves in the 4 to 8 Hz range . Alpha frequency is considered to be the gateway to deep meditation. Newborns sleep in this stage, adults less so. Alpha wave definition is - an electrical rhythm of the brain with a frequency of approximately 8 to 13 cycles per second that is often associated with a state of wakeful relaxation —called also alpha, alpha rhythm. The third type is the theta wave, the second slowest frequency, a state of deep relaxation bringing high creativity and insight with the subconscious mind accessible. Some devices will playback that information to you in the form of music at the same frequency, while others deliver the actual waveform back to your brain. Brainwave Frequencies & Effects . Descent into stage I non-REM sleep is characterized by decreasing EEG frequency (4–8 Hz) and increasing amplitude (50–100 μV), … 4. It is normal as the dominant rhythm in infants up to one year and in stages 3 and 4 of sleep. Alpha Waves is a 1990 3D game that combines labyrinthine exploration with platform gameplay.It combined for the first time full-screen, six-axis, flat-shaded 3D with 3D object interaction (like bouncing on a platform). Alpha waves generally are seen in all age groups but are most common in adults. Coma is a state of decreased consciousness in which the frequency of brain waves is similar to the alpha rhythm, and is regarded as the “alpha-coma” pattern. ; Alpha waves, which measure between 8 and 12 Hz, occur when people feel relaxed and when the brain is in an idle state without concentrating on anything. During this phase of the sleep cycle, the brain begins producing very slow, large Delta waves. Slow Wave Sleep or SWS, is the deepest of sleep states and it plays a vital role in health and well being. Alpha is considered the “power of now”, being here and in the present of the moment. This pattern is called beta activity. Each of these of these brain waves has a normal frequency range in which they operate. This was the "posterior basic rhythm" (also called the "posterior dominant rhythm" or the "posterior alpha rhythm"), seen in the posterior regions of the head on both sides, higher in amplitude on the dominant side. Alpha is the frequency between our conscious thinking and subconscious mind. Alpha-wave frequency characteristics in health and insomnia during sleep Introduction. They're most common right before you drift off to sleep. Alpha brain waves (8–13 Hz) may be considered a bridge from the external world to the internal world, and vice versa. Hypnogram of all participants was scanned in four conditions which include wake before sleep onsets (WBSOs), wake after sleep onsets (WASOs), REM, and non-REM (NREM). What does alpha state feel like? It signifies "drowsiness" i.e. Alpha waves or Alpha rhythm are macroscopic neural oscillations in the frequency range of 8–12 Hz likely originating from the synchronous and coherent (in phase or constructive) electrical activity of thalamic pacemaker cells in humans. Alpha waves have frequency blocks of 5 to 12 Hz. Alpha brainwaves promote creativity, problem-solving and a flow state or “getting into the zone”. Usually these brainwaves show that your mind is relaxed although still aware. Frequencies below 8 Hertz are considered theta waves. Theta waves. Occipital Lobe Alpha Brain Waves: This is the most widely researched type of alpha activity. Alpha Waves. Delta waves are the slowest of all five brainwave frequencies and range between 0-4 Hz. Frequency: Starts at 12 Hz and ramps down 3 Hz per minute to 9 Hz. ALPHA (8-12 Hz) Alpha waves are those between 8 and 12 (Hz). 1 . In everyday existence, the ideal state of the ego may well be a state of poise between the inner world of self and the outer world of objects. It may also be particularly helpful for those lacking in physical fitness or exercise. Alpha Waves was an abstract game with a moody, artistic presentation, named for its supposed ability to stimulate the different emotional centers of the brain with its … Alpha waves. < 4 Hz. Theta wave Frequency range : From 4 Hz to 8 Hz The amplitude curve is shown in the figure above. It has been scientifically shown to be the human frequency in all of our chakra s Alpha Brain Waves Research. It helps us calm down when necessary and promotes feelings of deep relaxation. Alpha waves occur from frequencies of between 8 Hz to 12 Hz. Then over 1 minute ramps up to 11 Hz and stays there to finish. In everyday existence, the ideal state of the ego may well be a state of poise between the inner world of self and the outer world of objects. [DHA] associated 6.8 HZ with the Schumann Resonance and the Alpha-Theta borderline. As demonstrated in Figure 2, power of the alpha, alpha frequency, and their variability were computed. There is no shortage of research into the benefits of alpha brain wave frequencies. Alpha. As is well known, brainwaves can be altered by various extrenal stimuli, including auditory stimulation. Alpha brain waves are considered slower brain wave activity with oscillations that range from 8 Hz to 12 Hz (cycles per second). Originally described by Hans Berger, alpha waves manifested in the occipital region at 7.5 Hz to 12.5 Hz once a subject undergoing EEG recordings closed their eyes. SMR brainwave stimulation has been used by clinicians to assist with concentration, reading speed and energy levels as well as for help with epilepsy, ADHD, insomnia, depression, anxiety, stress and autism. The Alpha brainwaves are those that are not quite as fast as the Beta waves, but they are still aster than the Theta and Delta waves. Alpha brain waves are present in deep relaxation and usually emerge when daydreaming or during light meditation. We are gathered here today to heal your chakra quickly. Theta brain waves are slower than gamma, beta, and alpha waves, but faster than delta waves. A pleasant and easy way to e.g. In Alpha, the mind and body are relaxed but a level of focus is easily maintained. Delta waves are associated with deep levels of relaxation and restorative sleep, to … Historically, they are also called "Berger's waves" after Hans Berger, who first described them when he invented the EEG in 1924. Hans Berger named the first rhythmic EEG activity he observed the "alpha wave". 2. Source: rawpixel.com. With a frequency range from … In physics, the frequency of a wave is the number of wave crests that pass a point in one second (A wave crest is the peak of the wave). Hertz (symbol Hz) is the unit of frequency. The relationship between Frequency and wavelength is expressed by the formula: f = v / λ {\displaystyle f=v/\lambda }. Brain waves are measured by frequency, which is cycles per second, or hertz (Hz), and they range from very slow to very fast. It is important to know that all humans display five different types of electrical patterns or brain They are known to help calm you down and promote feelings of deeper relaxation and content. ALPHA (8-12 Hz) Alpha waves are those between 8 and 12(Hz). CHARACTERISTICS: Alpha waves and slower and higher in amplitude than beta waves. Alpha waves are produced naturally when you close your eyes and relax. Recognizing the frequency of the waveforms is fundamental to interpreting EEG. Theta Brainwaves. Delta wave binaural beats are also identified as a peaceful frequency. In other words, alpha is the frequency range between beta and theta. It is an optimal time to program the mind for success and it also heightens your imagination, visualization, memory, learning, and concentration. Alpha waves are in the frequency range of 8-12 Hz. Alpha Waves (8Hz-12Hz) – The state when you are totally relaxed. Alpha waves aid overall mental coordination, calmness, alertness, mind/body integration and … They are slower than alpha waves but faster than delta waves. Your brain is a bustling hub of electrical activity. Listening to binaural beats in the alpha wave range is said to help synchronize the brain with that frequency. Alpha-wave amplitude and frequency and their variability. Theta Waves: These brain waves come in strong bursts in long-term meditators who report a peaceful, drifting, and pleasant experience at the time. It signifies "drowsiness" i.e. Alpha is the frequency range from 7 Hz to 13 Hz. The state of being focused, alert, or engaged in any form of activity are related to beta waves and they have a frequency of 14–30 Hz. When you’re awake but feeling quiet and contemplative, that’s when alpha waves tend to rise to the occasion. Brainwave entrainement (or synchronization), aims to cause our brainwave frequencies to fall into step with a periodic stimulus having a frequency corresponding to the intended brain-state. Alpha brainwave frequencies were discovered in the year 1908 by Hans Berger using a very first amplifier of his design. A 2015 study on the relation of physical exercise on alpha brainwaves has shown that alpha waves increased following intense physical exercise. They occur rhythmically on both sides of the head but are often slightly higher in amplitude on the nondominant side, especially in right-handed individuals. Alpha-band activity is particularly interesting because it is the only frequency domain (with the exception of slow beta, a frequency higher than alpha, up to approximately 20 Hz) that responds to a stimulus and/or task demands either with a decrease or increase in amplitude/power, termed event … Alpha waves, which measure between 8 and 12 Hz, occur when people feel relaxed and when the brain is in an idle state without concentrating on anything. Occipital Alpha is the dominant rhythm in relaxed wakefulness in 85% of healthy adults with closed eyes (Occipital = Occipital lobe at the back of the head). Maximum frequency accuracy and power output with squarewave Duty Cycle - 1 to 100 percent Carrier Frequency - adjustable ranges (1) from 1 to 100,000Hz. And mainly focus on the subconscious mind which also becomes a bridge between the conscious and subconscious mind. 1. Alpha waves will peak around 10Hz. It is identified as the best wave of decreasing stress and elevating mood. and services below 22 kHz By R. Warnett & others, (upd. 5 Types of Brain Waves. The brain is made up of an uncountable amount of neurons, which all communicate with each other via electrical impulses. PNG adheres to the usual convention that alpha represents opacity; that is, an alpha value of 0 is fully transparent, and the maximum value for the pixel depth is completely opaque. Frequency describes how many waves there are per second, and is measured in hertz (Hz). Alpha wave Frequency range : From 8 Hz … Studies show that Alpha states significantly increase … The electromagnetic waves with the highest frequency are gamma waves. The frequency of gamma waves ranges from 1020 - 1024 hertz. Gamma waves have the highest frequency, deliver the most energy, and have the lowest wavelength. Delta Waves. In turn, brain waves can be classified into different types according to their frequency , that is, the time that passes between the moments when many neurons fire electrical signals at the same time. During this phase of the sleep cycle, the brain begins producing very slow, large Delta waves. In normal subjects its peak frequency is in the range 8-12Hz. A presence of excessive Theta waves during a normal awake state could reflect problems with focus and attention, head injuries, and learning disorders. Alpha Brain Waves Definition . Alpha — Frequency range: 8 Hz – 12 Hz Associated with: Relaxation Increases when using: Relaxants. Frequencies between 8-14 Hertz are called alpha waves, and occur mostly during a relaxed state. Beta waves play an active role in network coordination and communication and do not occur until three years of age in humans. Your brain produces alpha waves (8 - 12Hz) when you are awake but relaxed and not processing much information – such as first thing in the morning, just before you go to sleep, when you’re daydreaming or practicing meditation (some scientists also claim aerobic exercise helps create alpha waves). Alpha is the resting state for the brain. Alpha waves are one type of brain wave that can be recorded by an electroencephalograph (EEG). These are mainly created when you read, work or socialize. Signal frequency: the main frequencies of the human EEG waves are: Delta: has a frequency of 3 Hz or below. That is all you are aware of. […] The resulting difference [frequency of our beat] is 10 Hertz. This brain wave type is our gateway to learning, memory and intuition. These waves tend to measure in the 12 to 38 Hz range. These graphs plot the spectrum of a given EEG signal, i.e., the intensity of the signal (Db/Hz) vs. its frequency (Hz). Alpha Waves. As mentioned earlier, brain waves can be used as an index of the consciousness level (27, 30). The intermediate type of brain wave, alpha waves, occurs in a relaxed state. For example, most are in agreement that Alpha waves are the most conducive to learning. Hypnogram of all participants was scanned in four conditions which include wake before sleep onsets (WBSOs), wake after sleep onsets (WASOs), REM, and non-REM (NREM). So say you’re meditating and the device records relaxing alpha waves. At this point, the neurons in your brain abundantly fire as you focus on cognitive tasks. The alpha wave is typically produced by the right hemisphere of the brain, but often is synchronized across both right and left hemispheres on an E.E.G. Frequency describes how many waves there are per second, and is measured in hertz (Hz). It tends to be the highest in amplitude and the slowest waves. Alpha brain waves can be found in that mysterious space between our conscious and subconscious minds—it is present during deep relaxation and light meditation. With a frequency range from 8hz – 12hz, Alpha is emitted when we are in a state of physical and mental relaxation (awake, but not processing much information). Beta Brain waves (14-40 Hz) Beta brain waves are generated when you are wide awake or alert. The detection of alpha waves on the ongoing electroencephalography (EEG) is a useful indicator of the subject’s level of stress, concentration, relaxation or mental load (3,4) and an easy marker to detect in the recorded signals because of its high signal-to-noise-ratio. PNG also uses only unassociated alpha, wherein the actual gray or color values are stored unchanged and are only affected by the alpha channel at display time. This is the brainwave for the fight-flight response. Scientists have found that alpha activity increases significantly during It seems that the pattern of EEG waves is mostly “theta-coma” in the elderly population. 3. Alpha-wave amplitude and frequency and their variability. The alpha brain wave frequency is slower than beta. Then over 1 minute ramps up to 10 Hz and stays there for 9 mins. Children and adults with ADHD will produce excessively lower frequency Theta waves. alleviate headaches through relaxation.” Alpha waves are the ‘frequency bridge’ between our conscious thinking (Beta) and subconscious (Theta) mind. Our brain consists of 5 different types of brain waves; Delta, Theta, Alpha, Beta and Gamma brain waves. The database was searched for PSG records of … Alpha . Alpha waves will peak around 10Hz. Alpha waves occur when a person is relaxed, but alert, having a frequency of 8–13 Hz. (3) Use of Cannabis (marijuana) has also been linked to an increase in alpha waves in brain. Specifically, alpha waves are observed as being generated mostly from the occipital lobe during drowsiness and … Alpha-band oscillations range in frequencies of 8-12 Hz and originate in the occipital lobe. Hi Chakra Healing Paradox Family! See the infographic below for details. or from 0.100mHz to 4.000 MHz Stays at 9 Hz for 7 minutes. As demonstrated in Figure 2, power of the alpha, alpha frequency, and their variability were computed. One of the functions of SmartSound is to promote broad-spectrum, evidence-based benefits and effects via the use of rhythmic auditory stimulation and other techniques to stimulate targeted brainwave frequencies. Beta (14-40Hz). A significant proportion of the electroencephalography (EEG) literature focuses on differences in historically pre-defined frequency bands in the power spectrum that are typically referred to as alpha, beta, gamma, theta and delta waves. The Alpha waves are rhythmic waves occurring at a frequency range between 8 and 13 Hz, which are found in all normal persons when they are awake in a quiet, resting state of cerebration. Check out 10,5 Hz Alpha Waves Frequency for healing of body, mind and body unity,potent stabilizer and stimulating for the immunity, Relaxed alertness, contemplation, body healing, mind over matter, Lowering Blood Pressure, Associated with Heart Anahata chakra (Binaural Beats) by Complete Brainwave Therapy System on Amazon Music. During this state, a person is awake but resting. Alpha brain waves are in … The alpha brain wave range contains a few different types of specific alpha waves. Exercise. It usually radiates through this frequency. All types of alpha waves play an important role in our sleep-wake cycle. ; Theta waves, which are between 4 and 8 Hz, occur during light sleep or deep relaxation. Our Alpha binaural beats music fuses Alpha frequency sound waves with beautiful ambient music that can be listened to in a number of situations, depending on your desired outcome. Here, we review 184 EEG studies that report differences in fre … I think this is slightly off – most sources consider the lowest frequency of the Schumann Resonance to be 7.83 HZ, and that’s also considered the borderline between Theta … Alpha Waves is a 1990 3D game that combines labyrinthine exploration with platform gameplay.It combined for the first time full-screen, six-axis, flat-shaded 3D with 3D object interaction (like bouncing on a platform). Just below gamma is the alert and busy-mind state of beta waves, and the lowest range of the gamma state overlaps with beta frequencies.. Below beta, we find the open-minded, inspirational states of alpha waves and then the dreamy, relaxed, and meditative realms of the theta waves.The slowest frequencies of all are the deep-sleep regions of delta waves. Historically, they are also called "Berger's waves" after Hans Berger, who first described them when he invented the EEG in 1924. The alpha frequency band has been studied extensively in meditations of various kinds (like Zen, TM etc) and in almost all cases an increase in the alpha waves has been noted during meditation. Generally, specific brain wave frequency ranges can be associated with mood or thought patterns. It is the resting state for the brain, not unlike a car idling at a stoplight.
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