Some research suggests that the benefits from brainwave entrainment can last a lot longer, and still be seen for some time after you've stopped using it.  Study participants have still maintained improved test scores a few weeks after the stimulation had ceased.  Research on the long-term benefits has so far been minimal though, so how long the effects last is still up for debate.
Isochronic tones and Monaural beats are now being considered by many to be more effective and more useful in brainwave entrainment technology. Monaural beats, unlike binaural beats, only use one beat. It is said that these are easier on the brain, and help to induce a specific brainwave state faster and more effectively, as the brain does not need to go through the process of reconciling two different frequencies. 
Use Holosync® to accelerate the process (our data tells us that Holosync® creates the benefits of traditional meditation about 8x faster, but without spending several hours each day). Holosync® is faster, and it is easier. And, because you begin, the first time you listen, meditating like a 30+ year veteran, you see results quickly. Finally, Holosync® feels so good, and in fact causes you to feel good for the entire day when you use it, that the problem of getting yourself to meditate each day disappears.
The good news is there are loads of guided meditations which will not only take you into theta brain waves, but will make you feel good about yourself at the unconscious level too. These are some of my favourite types of brainwave entrainment - and you can get them on topics such as money, confidence, creativity, success, relationships, weight loss, smoking and more.
Targeted hemispheric changes: Some speculate that specific alterations in brain waves can be made on an individual basis. In other words, you can target one frequency in one hemisphere (via the right ear) and another distinct frequency in the other hemisphere (via the left ear). The left ear affects the right hemisphere and right ear affects the left hemisphere.
Today, EEG machines are used for diagnosing epilepsy and sleep disorders, for determining dosages for anesthesia, and measuring the brain activity of people in comas or suffering from brain trauma. EEG machines also continue to play a role in researching and understanding brainwave entrainment and developing new and better methods for delivering the benefits of this form of brainwave modification. 

The Delta waves range from 1-3 Hz; these frequencies can assist in enhancing deep sleep. They also play a big role in boosting the immune system to facilitate natural body healing. The Theta waves have a frequency that ranges from 4-7 Hz. In turn, this brain state can enhance deep relaxation and is known to assist individuals who have poor memory. They are the best frequencies to use if you want to focus or meditate.
A common element in recordings incorporating alpha and theta frequencies is a steady but barely perceptible rhythm of the frequencies themselves. This subtle and calming pulse mixes with sounds of gentle breezes, distant bird songs, and the slow progression of deep synth notes. Underneath this, below the audible sounds at sub 16 hertz levels, other frequencies intermingle, deepening the merging of conscious and unconscious mind.

When you type “brainwave study music” into your search bar, more than likely, you are going to get a good variety of results: alpha brain waves, gamma, theta… But how do you know which one is the best to use, and when? You’re in luck, because in this article, we will be exploring just that! But first, let’s quickly take a look at the 5 different types of brain waves. Types of Brain Waves Here is a brief summary of each type of brain wave and how it affects your brain — beginning with the … [Read more...]
-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.

Unlike many traditional therapies for dealing with stress, anxiety, depression or cognitive impairment, entrainment does not require a focused effort from the person having the therapy, as the brain instinctively follows the frequency. This makes it a much more effective therapy for managing some of these challenging conditions, by automatically inducing a sense of relaxation and a reduction in negative physical and emotional patterns.

Good to hear from you and glad you got some value from the article. In total honesty I do feel that brainwave entrainment is safe, and that the big point is not to over-use it, or to push yourself too hard. You can almost think of it like an herb or nutritional supplement. You don’t expect big results the day/week of taking it, and if you don’t get results, you don’t keep taking more. You take it in regular safe doses over a recommended period of time and let it synergistically work its magic. Generally I think you are safe to listen to the audio you made, I just recommend taking it gradually with gamma in particular. Listen for just 10-15 minutes at first and see how your brain handles it. If it doesn’t produce any unwanted feelings then jump right in. But even then I recommend only listening once per day, and taking one day off per week.
Hi Julie! You’re very welcome for the info. In answer to your question, I think some are probably good, and some not so good. There are many people putting brainwave entrainment out there these days and it is not so easy to figure out which ones are and aren’t of reliable quality without investing time and doing some research. I would say (in general) that paid products are probably better quality than free ones, but I couldn’t guarantee this is a golden rule. My best advice is to just do your research before spending too much time listening to the freebies.

Besides, Holosync® users look forward to their listening session because the experience is wonderful, and you feel so good afterwards. But still, you do have to be willing to actually use the program. If you aren’t willing—if you don’t think the incredible mental, emotional, and spiritual benefits of this program are worth the time commitment—this isn’t for you.

This is the reason why I stress that one should ALWAYS read the instructions provided by the brainwave entrainment product creator, and always do their due diligence in researching the source of any products they purchase. When using a high quality product, these instructions are clear, precise, and always backed up by an extensive network of support and additional information. The product creators who have put in the necessary amount of effort and time to come up with a high quality product always make sure that you don’t get it wrong. 
If brainwave entrainment leaves you with unwanted side-effects (see below) or discomfort, you’re probably encouraging a range of brainwaves that are already excessive in some area of your brain. The way around this is to get a brain map to see what your brain’s strengths and weaknesses are, and see what (if any) brainwaves could use some encouragement. 
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