The formal name for this process is called the “frequency following response”, where the human brain will literally “follow” a specific frequency/beat after being exposed to it for (usually) about 8 minutes.  Technically the definitive term “entrainment” does not exactly match the actual process of what is happening to your brain when listening to these audios, but its close enough, and the name has stuck now with these products becoming more popular and widely known.

Deep relaxation is a major benefit resulting from the brain’s cortical frequency following response. By selecting the desired rate the brain, via the frequency following response, will tend to mimic the rate it is exposed to and thus enter that brainwave state. This helps to explain why this technology can produce benefits commonly found with meditation. One of the most valuable benefits of consistent  brainwave entrainment is that we are able to experience and recognize the various states of consciousness. With practice we can learn how to re-create these states.
The brain produces electrical signals. These signals change depending on what we are doing and what mental state we are in. For instance when we sleep these signals are different from when we are awake. This brain activity can be measured with EEG. It will output in Hz (Hertz - cycles per second) these electrical signals. The most dominant brainwaves will tell us what sort of state a person is in. The slower vibration (lower Hz), the more relaxed that individual is. Using audio technology we get the brain to start following the beats or pulses in a sound if done exactly right.
Now next point to make here is that many of the other promised benefits of brainwave entrainment stem from this basic foundation.  For example, it has been said that listening to brainwave entrainment resets the brain’s sodium/potassium ratio, greatly decreasing mental fatigue, and improving the transporting of positive neurochemicals between brain cells.  This promise rests on the fact that it has been shown that this occurs while one is in the theta state. Therefore, the answer would be that yes, because these audios do lead one’s brain into the theta state, then it follows that they would promote the resetting of the brain’s sodium potassium ratio.
This thing blows my mind! The first time I used it I was like "No way!" As I kept using it I discovered that it is literally the only way I am able to fall asleep nights when my mind is so full of thoughts and my anxiety is running rampant! I hate the way sleep aids make me feel like I've been run over by a freight train. I recently switched from using "Deep Sleep" to "Dreamy Sleep" and had the craziest dreams! I normally can't remember my dreams and I was actually able to recall quite a bit of them. Unfortunately last night, I dreamt that I faked the death of my dog last year and I felt like it lasted the whole night so I think I'll be switching back to "Deep Sleep" :( Awesome product though. My *only* complaint is that I wish there were more ambiance options or the ability to use it with Pandora. You can use your own music but I don't have much personal music on my phone so I am limited to using the app's ambiance tracks and they get old after a while. Highly recommend!

It was a few months after the birth of our second child that I came to truly understand the effects of long-term sleep deprivation. Constantly waking up at 1:00 or 3:00 a.m. soon turned daily life into a hazy blur. I'd often find myself lying in bed, anticipating the next round of crying, or later in the night, I'd be tossing and turning for ages after being woken up. It's no fun whatsoever to drag yourself out of bed every morning with dark circles under your eyes. During this time, it became … [Read more...]

Theta brainwaves are next highest in frequency above delta and are especially important for many people using brainwave entrainment and meditation because theta waves are at a threshold, forming a link between wakefulness and the subconscious mind. Theta waves bridge between our awake self and the creative and insightful understandings from below our conscious awareness, and while they are not common in awake adults, they are normative for children under 13 years old. 
So, you have read a little bit about brainwave entrainment and this technology’s purported near-miraculous effects on one’s body and mind. If you’ve browsed my site a little bit, you may have also explored the Brainwave Entrainment Studies (real life stories and research) and the scientific evidence behind this technology. You may have also  read about the side effects associated with BWE.

Hi Jason, thanks for all the uploads to youtube. I’ve been using them in work recently to help me concentrate and relax. I like the music tracks that you’ve chosen to overlay the tones. A couple of times in the last 2 weeks I’ve experienced the wavy pulse like sound, similar to the tones in my left ear. I wasn’t listening to tracks at the time or that day. It doesn’t last but it feels a bit strange. I wondered if I might have been listening to the tracks too loudly and that it was almost like a type of tinnitus. I’m curious to know if anyone has been in touch with you in the past to say they’ve had a similar experience?

With regard to listening without headphones specifically, you might find it irritating if you are someone who suffers from motion sickness, depending on how the track is created. If you were listening to binaural beats, they really need headphones to work properly. If you are in a room and closer to one speaker you may not even hear binaural beats properly, and if sitting off centre in the room generally, that may have unsettled you if you have motion sickness as the tones try to form a beat in your head. If it was just a standard isochronic tones theta track that shouldn’t be irritating if you have motion sickness.
Years of scientific study combined with the personal testimony of thousands of people establish that using brainwave entrainment techniques positively affects the physical, mental, emotional, and spiritual well-being in a majority of users. You can easily take advantage of these powerful methods of personal self-help and self-improvement by downloading a variety of entrainment music right now.
I love your tapes! I bought them a few weeks ago and have greatly benefited. I’m also a holistic practitioner and have recommended them to a number of patients. And today when I made my last referral to your website for them to purchase from, it occurred to me that perhaps you have referral discounts, or wholesale prices for practitioners, and that I should ask?
* Supports iOS 5.0 and higher * Thanks for making Brain Wave the Top Selling Brainwave Entrainment app 4 years! This update includes improvements to our last major update, which included a ton of new features, including the ability to use your iTunes Music as the background and Alarm Audio, support for running another audio app simultaneously, such as a web or ebook reader, and UI updates for iOS 7.
There are many sources of binaural beats on the internet and YouTube to check-out and experiment with yourself – I recommend using headphones for optimal effectiveness. However, like most things, not all binaural beats are created equally (especially if they are free on the internet) and therefore not as effective or enjoyable to listen to. This is why I HIGHLY recommend the binaural beats created by master audio technician, music producer and meditation teacher, Cory Allen – which can be found here:

Use traditional meditation to create the changes in the brain that lead to the benefits I’ve described here. Of course that means going through a long learning curve while you master the art of meditation, motivating yourself to sit each day to meditate. And, to get the benefits I’ve described, you’ll need to meditate several hours each day), and continue in that way for 30+ years.
I have read something different about theta waves and learning languages. A University of Washington study tested students resting brainwave activity before learning French. They found that students with a higher amount beta/gamma and a lower amount of delta/theta activity were better at acquiring a second language. When you are dominant in theta, that is the lowest and most deeply relaxed awakened state you can be in. I think it would be much harder to really concentrate, fully understand and learn new information while in a theta state, so I would personally consider using theta while studying.
A study that tested photic stimulation for reduction of poor behavior in ADHD children found that 15 sessions of photic stimulation between 12 Hz and 14 Hz resulted in behavioral change. This behavioral change was measured using the Achenbach Child Behavior Checklist – which accounted for not only the parent’s perspective, but self-reports from the children. Statistically it was stated that behavior improved up to 70% in the stimulation group compared to controls.

Given that brainwaves control and connect such a vast range of human experience from thought to feelings to actions, it is easy to see how the deliberate control of brainwaves can affect mood, behaviors, motivation, and even physical health. Brainwave entrainment is a safe, simple, and scientifically proven method for quickly guiding the brain into a beneficial brainwave frequency to facilitate healthy sleep, lower stress, heal emotional problems, and improve physical health.

-Frequency of the Tone Itself that Makes the Beat (Carrier Frequency): The first frequency was the rate of the beat pulsing on and off. This frequency is the sound frequency of the actual tone that comprises the beat. This frequency also has an effect on the way the technology affects your brain and consciousness. For example, too low of a carrier frequency for a binaural beat can be too much for a beginner’s brain to handle at first, and too high of a carrier frequency can be not enough for an experienced meditator’s brain to make big changes.
Binaural beats are created from two different continuous tones, which when sent separately to each ear create a single beat inside your head. Isochronic tones are basically a single tone which is switched on and off at regular intervals. Imagine a single continuous tone playing on a stereo system and you’ve got your hand on the volume switch. Then once per second, you turn the volume off for half a second and keep doing that every second. For half a second the volume is off, for the other half a beat waveform is formed. The beat is cycling once per second per second, i.e. at a rate of 1Hz.
If you’ve used brainwave entrainment and experienced any benefits, feel free to share your experience in the comments section below. Be sure to discuss why you believe the entrainment was effective and/or whether you think it could’ve been a placebo effect. I’ve played around with the products and feel as if they are great for relaxation enhancement, inducing a temporary perceptual change (i.e. altered state of consciousness), and arousal reduction.
Don’t let someone fool you by making this sound overly technical, scientific, or too good to be true. It can truly change your life! It changed mine in a huge way. That’s why I’m so passionate about it! But it isn’t a “magic pill” that will effortlessly solve all your problems. I truly think this technology is nothing short of a miracle, and is on the very edge of the future in scientific ways to influence consciousness, personal development, and success in life, but it is also still practical, and worth exercising some discrimination and skepticism when making a decision on where to spend your money.
Naturally "click" with people – To get to the top, it takes good communication. World leaders get elected for their ability to communicate. Business visionaries have ideas that they make tangible by sharing their dreams with others. Pick up artists attract the opposite sex by noticing, and reacting, to subtle body language and saying the right things at the right time. What if you could easily and automatically just "click" with people, and gain instant rapport with your audience?
While visual entrainment is more powerful than audio alone for inducing desired brainwave states, more caution is needed when using visual methods. Between 0.3 and 3 percent of the population is susceptible to having seizures from flickering light stimulation, and for other people, flickering visual stimuli simply makes them uncomfortable. People with epilepsy have a greater chance of having a seizure from exposure to flickering light stimulation.
BrainAscend is a completely free meditation program featuring 5 deepening levels, meaning 5 free MP3 tracks using brainwave entrainment technology, created by Marcus Knudsen, inventor of BlissCoded sound. It uses the scientifically proven most effective brainwave entrainment technology in a special process that steadily expands your brain power and consciousness level.
I just wanted to thank you guys for having such an outstanding product available. I used to meditate when I was younger but got away from it over the last 7-8 years. I had difficulty starting back up, but since I started using your cds I have no difficulties getting back into it; and am now meditating 2 hours per day and have never felt better. I have only been using them for a couple weeks but have already noticed a difference. Thanks again for creating such a wonderful product and I will be sure to recommend it to everyone.
Another small scale study with 30 children were entrained with a starting frequency of 14 Hz and ramped up to 40 Hz. Following the excitatory-based protocol, they were then given a protocol that started at 40 Hz and decreased to 14 Hz over 6 weeks. The results indicated that the children significantly improved in arithmetic abilities based on the WISC-III.
Kelly Howell brings 30 year's experience to her expertise. She has been cited by the Mayo Clinic as "renown for her pioneering work in healing and mind expansion (and) visionary recording techniques." She has collaborated with neuroscientists and biofeedback therapists to invent a sophisticated sound recording technique that makes Brain Sync programs more effective. The result is the most elegant and effective brainwave synchronization audio programs available in the world today. You'll feel the effects from the very first time you listen. With regular use, you'll establish new healthy patterns that last. Brain Sync programs use window frequencies – extremely precise frequencies that fit through narrow biological windows to impact the body at the cellular level. The choice of frequencies selected for each program is based on biofeedback research. Programs are designed to help you self-generate optimized brain states exhibited by remarkable men and women.
Isochronic tones have only been proven to have an effect while you are listening to them, that’s why you won’t find me claiming anywhere that there are potentially positive long-term effects. Once the tones stop, your brainwaves are no longer being stimulated by the sound and so they stop being in sync with the tone frequency. For you to think you are still feeling the effects after all this time and from such a short time listening to them, I think it may be linked to anxiety. I know that some people who are new to this type of thing can build up a strong feeling of anxiety, after worrying about the potential effects brought on by fear of the unknown. I suspect the problem may be psychological with you worrying about the potential effects and keep repeating the experience from memory in your head. When you keep going over the same thing in your head like that and worrying about it, it’s easy to then spot other potential side-effects like how your nostrils and body temp is feeling, then making links back to that experience and labelling that as the reason. I think the best way to overcome this is to realise that the side-effects you are mentioning are completely unrelated, so there is nothing to worry about. These tracks are literally listened to for millions of hours a month on YouTube across loads of channels. If the effects lasted for a long time people would just listen for 5 minutes and come back in a couple of weeks. But people keep coming back to listen because that’s the only way to feel the benefit and effects…while you are listening to them. If you are unable to stop thinking and worrying about this on our own, I recommend that you speak to your doctor about it or a specialist in dealing with anxiety issues. I hope that helps.

EquiSync’s design is based on the 100’s of studies performed on the effectiveness of brainwave entrainment technology, and 1000’s of studies on the powerful benefits of meditation. If you are interested in better understanding the power of this technology and rapidly expanding field of research, then here is a very abbreviated bibliography, a very small sample of the studies out there:

The program uses special ‘brainwave’ sounds to meditate for you. That means you don’t have to actively try to quieten your mind, stop fidgeting, or focus only on the meditation. And you don’t have to reschedule your day. Each session lasts just 12 minutes, and you only need to meditate a few times a week to reap the rewards. Just sit back and hit play.

- Added the ability to create a playlist of your own iTunes library music and use it as the background. The behavior of the app when iTunes music is used instead of the included ambience is slightly different so please review the help. Notably, unlike our included ambience which can be played at a volume below the device volume, iTunes music can only be played at the device volume. So when playing iTunes music the Ambience volume slider disappears.
Admitted, I haven’t listened to all the tracks yet, but while listening to the demo alone over the course of a month-and-a-half I, too, had a transcendental experience that was amazing! So I determined pretty quickly to save the money and buy your product, even though I really can’t afford it. Yes, over the last 3 years meditation has become that important to me.
Beta is the most common brain wave pattern: Beta brainwaves are produced when we are wide awake, alert, active and engaged in mental activity, usually involving more the rational, reality-oriented left hemisphere of our brain. When beta wave activity becomes very intense, our brain hemispheres become less synchronised. Beta state is required to function properly in your everyday life.
Another small scale study with 30 children were entrained with a starting frequency of 14 Hz and ramped up to 40 Hz. Following the excitatory-based protocol, they were then given a protocol that started at 40 Hz and decreased to 14 Hz over 6 weeks. The results indicated that the children significantly improved in arithmetic abilities based on the WISC-III.
Expand your natural alpha brainwaves and theta brainwaves using light sound AVS brainwave entrainment therapy and binaural beats stimulation for creative imagery and meditation. Beta brainwave stimulation is best for heightened athletic performance. Delta brainwaves are for deep, restive sleep. Your neural oscillations and induced activity, in conjunction with ongoing brain activity can be measured via electroencephalography biofeedback and eeg neurofeedback instruments.

Alpha stimulation: Stimulation of alpha waves has been shown to provide stress-relief among employees, is able to provide pain relief, and improve measures of competence and recognition. If you have significant work-related stress, entraining certain alpha frequencies may help you decrease arousal and improve relaxation. Post-surgical stress doesn’t appear to benefit from alpha stimulation.
I just wanted to thank you guys for having such an outstanding product available. I used to meditate when I was younger but got away from it over the last 7-8 years. I had difficulty starting back up, but since I started using your cds I have no difficulties getting back into it; and am now meditating 2 hours per day and have never felt better. I have only been using them for a couple weeks but have already noticed a difference. Thanks again for creating such a wonderful product and I will be sure to recommend it to everyone.
The Transparent Corp forum – This forum is an invaluable resource for any brainwave entrainment user or enthusiast.  Most of the feedback is obviously focused on the Transparent Corp software, but with over 20,000+ posts now you can find answers to the whole array of brainwave entrainment questions on there.  (UPDATE: Sadly, the Transparent Corp forum has now been taken offline)