While the physiological and psychological processes being uncovered by brain science in the study of brainwaves is sometimes complex and still being investigated, certain basic principles are well-established, easily understood, and helpful for achieving the most effectively use of brainwave entrainment when seeking relaxation, improved sleep, lowering of anxiety, or other goals. This important background information and scientific knowledge presented here includes: 
Stress: In one randomized controlled trial with 108 participants, a single session of alpha and delta stimulation resulted in significantly less anxiety in surgical patients. Another session of theta stimulation resulted in improvement in certain measures of stress. Stimulation with certain frequencies of alpha and beta were reported to provide the most significant benefit for those who are stressed.
What I really like about iAwake is their standalone offerings. They produce quite a few audio pieces that are geared toward specific brainwave targets and desired results. These individual products aren't progression - based (you can listen to whatever tracks you want whenever you want), so there's no lengthy investment of your time involved. Also they're way cheaper (around $30-$50 depending on the product). In addition to manipulating brainwaves with sound, they pride themselves on their patented Biofield tech (look them up for more info).
I would like to start off by saying that many bold statements are made about this technology from people who have a self-interest in promoting or rejecting it. We have to face the truth by accepting that people are profiting from brainwave entrainment, and as a result of this other groups of people are being affected in a negative way (from a business point of view). This is a reason why you can find all kinds of claims from someone who has never used or tested the technology.  Unfortunately I have found in my own personal journey of using brainwave entrainment that there are some great people out there making some great products, and there are also some irresponsible and untrustworthy people out there trying to grab a slice of the pie.

I’ve been using equisync first thing in the morning after I get up, and listen to all three tracks in a row. I again listen to all three tracks in the late afternoon. If I don’t have that much time available, I will start on Track 2 or 3, as necessary. I have really started to focus on my breathing, and notice the difference – I finish the session in a DEEPLY relaxed state.

“The great neuroscientist W. Gray Walter carried out a series of experiments in the late forties and fifties in which he used an electronic stroboscopic device in combination with EEG equipment to send rhythmic light flashes into the eyes of the subjects at frequencies ranging from ten to twenty five flashes per second. He was startled to find that the flickering seemed to alter the brain-wave activity of the whole cortex instead of just the areas associated with vision. Wrote Walter, “The rhythmic series of flashes appear to be breaking down some of the physiologic barriers between different regions of the brain. This means the stimulus of flicker received by the visual projection area of the cortex was breaking bounds— its ripples were overflowing into other areas.”
If you find that you are really heavily into overwhelm, you can just turn the volume down and meditate with the biofield amplitudefrom your iPod, CD player, PC, or Mac transmitting a very healing biofield technology that allows you to dig deeper into meditative states without putting your nervous system on edge. Now you are pushing and purifying your nervous system without bludgeoning it.
The brain is composed of millions of specialized cells called neurons. Neurons send signals to other neurons using electro-chemical messengers called neuro-transmitters that attach to receiving sites located on the neurons themselves. There is a space between the end of the neuron and the receptor called the synaptic gap. As neuro-transmitter chemicals move across this gap, a small electrical charge is created. 
Generally, the established brain entrainment technology has been to use various static levels, lowering the carrier frequency of the binaural signals over time. By doing this, you basically increase the resonant power of the carrier frequency to resonate more deeply with the resonant frequency of the brain and the nervous system. This process pushes the nervous system over time. The limitation I find with this system is that it takes a static approach, in the sense that it gives the nervous system the same degree of stimulation day in and day out. The idea here is that if you keep whamming your nervous system with the same stimulation on a daily basis, it will eventually kick in and learn. Then your nervous system and your brain will jump to the next level.
I definitely NEED (& can feel a difference mentally) Gamma the most. Beta and Alpha do better my processing. Theta waves are TERRIBLE! My normal symptoms increase when listening to those frequencies! Delta has been helpful for me around nighttime. It has helped my sleep on occasion. *Note: Do not listen to higher frequencies (Gamma, Beta) before bedtime! They will keep you very alert.

I wouldn’t personally recommend listening to delta wave frequencies for depression, so I’m not sure who advised you to do that? People with depression usually have a higher ratio of theta and delta wave activity, so I would normally recommend listening to high alpha wave and low beta wave frequencies, to help balance things. I have some 10Hz alpha tracks for serotonin release, which you can try for free on my YouTube channel here: https://www.youtube.com/watch?v=3NSUcuzpRcY&list=PLveg0IEcZWN6T86nhmSrdwG2kMQtcLRou. I also recommend you give these SMR (low beta wave) tracks a try: https://www.youtube.com/watch?v=HGTvBbrEwZQ&list=PLveg0IEcZWN7yaMaKr8F-eWHALk2_zGqY. I hope that helps.

Filed Under: Brainwave Entrainment, Creativity, Emotional Healing, Flow State, How to Let Go, iAwake Weekly Call, Life Optimization, Meaning of Life, Meditation Technology, Practice of Meditation, Spiritual Development, Waking Up Tagged With: Benefits of Brainwave Entrainment Meditation, Brain Entrainment Meditation, Brainwave Entrainment, Brainwave States, Changing Our Brains, Conscious Evolution, Daily Meditation Practice, Finding your purpose, Integral Recovery, Life Optimization, Meaning of Life, Overcoming Depression, practice of meditation, Spiritual Development, Stealing Fire, Stealing Flow, Waking Up
You may already have a good feel for where each of the different brainwave states takes you, and know intuitively what will work for you the best on a day-to-day basis with your meditation practice. If you are a little fuzzy about the differences between the brainwave states, however, and would like to have a really clear, visceral sense of what each state does for you and how they resonate with you physically, mentally, and emotionally, one way you can find out is to listen to Harmonic … [Read more...]

Brainwave Entrainment is the process of synchronizing the brain to specific frequencies and patterns embedded in audio tracks. These frequencies correlate to specific emotions, feelings, and even energy levels. Using nothing more than sound, Brainwave Entrainment can enhance creativity, change moods, and even alter behavior like sleep and energy levels.
No matter what you use: USE it. At least for a couple weeks.  And have realistic expectations...  Brainwave Entrainment is not some pill or quick solution (even if there are some sessions that usually give almost immediate results e.g. for sleep induction or pain relief), it is a tool that requires training and works best in combination with good breathing / meditation techniques.
Basically, one frequency of sound plays through one speaker/headphone and a different sound frequency plays in the other speaker/headphone. With these two different frequencies playing in each ear separately, but at the same time, your brain automatically tries to make up the difference in this frequency range and therefore is gently brought into a new, desired brainwave state as described above. An example of this effect would be a 100Hz frequency playing in your left ear and a 105Hz frequency playing in your right ear. Your brain, over several minutes, distinguishes the slight difference in frequencies and automatically adjusts its brainwave state to match this difference – being 5Hz in this example and therefore putting your brainwave into a Theta state. Pretty cool huh?!

  It's like gaining a new level of clarity... understanding.... wisdom. When you're able to artistically and logically render solutions to problems... when you can objectively and subjectively evaluate opportunities and their innate qualities... when you can read people and empathetically understand them... you're given a foresight that others simply lack.

Binaural beats were the first method discovered for brainwave entrainment and works by delivering tones of different audible frequencies to the two ears with the difference in frequency between the two tones being the frequency of entrainment. The difference in frequency between the two tones must be less than 30 hertz, and this resulting frequency is called a beat or the target frequency, and it is processed in a brain region called the olivary body. When listening to such tones with stereo headphones, the two hemispheres of the brain become synchronized at the target frequency.
Heart rate variability: A new study suggests that among those with low HRV (heart-rate variability), brainwave entrainment can increase HRV. Researchers studied individuals ages 20 to 70 and administered alpha brain stimulation. The alpha wave stimulation resulted in greater heart-rate variability. Since a low HRV is associated with early mortality and poor psychological and physical health, efforts made to increase it should be regarded as beneficial.

It may be that you had the volume too loud, but I would expect you to hear the effects of that straight after you’ve stopped listening, not on a day you haven’t used them. It might be something similar to muscle memory, where you suddenly remembered the sound and sensations it gives you as if you were hearing it again. I don’t know how long you’ve been using this type of thing for, but maybe it’s something that will settle down and disappear once you become more accustomed to the sound.
Really great stuff here, man. Well done! Without taking anything away from the article it would have been great to have under one “roof” similar information about hypnotherapy and subliminals. I invested quite a lot in buying binaural cd’s but after reading your material I think that for short term effects isochronic tones rather than binaurals are the technology to go for now. For longer lasting and possibly permanent effects I’m not sure whether I should go for hypnosis or subliminals (or both). An article as well written and comprehensive as yours but focusing on hypnosis vs subliminals would have completed the circle for me. The stuff I’ve read so far on binaurals vs isochronics hasn’t really done it for me. Any chance you could give it a shot?
How does brainwave entrainment work? Consistent, precisely engineered audio frequencies in the form of binaural beats cause the brain’s frequencies to match the stimulus. Your brain perceives two beats with slightly different frequencies (which are inaudible to the ear) through your headphones. It takes the difference between the two, and matches its own frequency to it. This is called the “frequency following” response.