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.
"When you're stressed, there's a battle being fought inside you," Mangieri says. "The antioxidants and phytonutrients found in berries fight in your defense, helping improve your body's response to stress and fight stress-related free radicals." Research has also shown that blueberry eaters experience a boost in natural killer cells, "a type of white blood cell that plays a vital role in immunity, critical for countering stress," says Cynthia Sass, MPH, RD, Health's contributing nutrition editor.
Beta brainwaves are produced and associated with states where cognition, concentration and arousal are at their highest. These are commonly said to be at the peak of physical and mental activity. Unless a positive outlook is maintained then anxiousness, tension and paranoia can become issues. Beta is the common brainwave state for most adults in developed countries.

While originally brainwave entrainment was achieved by using pure tones of sound, it is now possible to take these tones and blend them with music, rhythms, and natural sounds, such as the sounds of flowing water, bird sounds, or waves lapping on a beach, creating extended tracts of varied and intriguing brainwave entrainment music for everyday use.


The mechanism for this is that when your eyes or ears are exposed to a particular frequency of pulses or beats, the thalamus first distributes this information to the entire brain, including the visual and cerebral cortex where neural activity begins to synchronize to the incoming frequency, producing hemispheric synchronization and a balance of brainwave activity across the brain.


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. 
Many psychologists, doctors, teachers, and other professionals have endorsed the technology while personally taking advantage of the limitless benefits that accompany EquiSync's precisely designed brainwave synchronization/ entrainment technology. It is such a profound field of study that many of the metaphysical benefits, those beyond our current scientific measure and technological & philosophical understanding, have yet to be discovered.
The only thing I have found lacking in using your product is that there is no place on your website to register my kudos to you for such an excellent product. I am not new to meditation, nor to brain entrainment products, and I found you product to be really outstanding. I’m completely hooked, love listening to the tracks and they are the best way ever to treat monkey mind. Bada boom, bada bing, in just a few minutes any aggravation I’m experiencing in the outside world, melts away and I am one very blissful and happy camper.
By  tagging the transplanted organoid and creating a  glass window in the skull, the group was able  to keep track of where it was in the mouse brain. The first thing they noticed was that compared to organoids kept in a dish, the organoids that had been successfully transplanted into the mouse brain shared more features with a human brain. The normal human brain has a network of cavities, which are filled by cerebrospinal fluid and is also formed up  of distinct layers of neuronal cells, which mature over time. In the  dish, organoids develop a cavity and begin to form different cell layers  like in a real brain, however, the cells that make up the layers do not  fully mature. When the researchers compared the different cell types  present in the implanted organoids vs. those that were formed in a dish,  they detected a higher number of mature neurons and also other cell  types, such as the star-shaped support cells of the brain, called astrocytes, which are not usually found in lab-grown organoids.
These sounds in these musical tracks are presented through monaural beats, binaural beats, isochronic tones, or a mixture involving combinations of all three of these modalities, described in detail below. Choose alpha brainwave tracks for calming anxiety and relaxing body and mind, and choose theta tracks for help in getting to sleep and for bringing hidden feelings to the surface. Some people also report out-of-body type experiences when in theta brainwave states.
Accessing a more relaxed and peaceful state of mind with delta brainwaves, a spiritual awakening is increasingly possible. Gurus believe that the body & spirit connect when the conscious & subconscious minds merge, as in the delta brainwave state. This results in an ever-increasing internal awareness plus a deeper connection and understanding of the spirit.
Most massage therapists recommend getting a weekly massage, as this is the frequency that has shown the most significant benefit for most problems. However, even a monthly massage provides benefits. If you don’t have access to a good massage therapist, getting your muscles rubbed by a loved one works nearly as well. All it takes is a little bit of love to give a home-based massage. This can help connect you with your loved one, can act as a prelude for more intimate activities, and can build better bonds. A 15-minute foot massage from your husband has been reported to be one of the most intimate activities a husband and wife can share without engaging in sex.
I have been listening to relaxing music on YouTube while writing (I write for a court TV show) YouTube recommended Binaural Beats; I thought the sound was annoying at first, and almost moved on from it, but when I felt a tickle in my brain (It sounds funny but I’m being honest!) I decided to research about Binaural Beats and came across this amazing, informative website, it’s only been a few minutes of listening to Binaural Beats and I’m hooked! thank you Zenlama.com
There isn’t really a one-size-fits-all track or frequency range which is right for all kids while doing homework. So that does make it difficult to recommend one thing in particular, and why I have a number of tracks for studying and focus. If they have already learnt and understood the information, but are just trying to commit it to memory for a test, then I would recommend an alpha track, like the Memorization Study Aid product I have with the 10.4Hz frequency you referred to. If they are still trying to fully understand what is being taught in a workbook, then I would recommend a track that is mainly beta frequencies, like my Study Focus tracks. In the middle, I have a number of tracks which use a combination of beta and alpha wave frequencies, like Study Booster, Study Enhancer and Cognition Enhancer. The last 3 use similar frequencies but deliver the tones and brainwave entrainment effects in different ways. As we are all wired a little differently it does sometimes take a bit of trial and error, to see what method or frequency range works best for the individual. These types of tracks are made for a general audience. In an ideal world, you would hook up to an EEG and see in real time exactly what a person responds to best, depending on the goal and current state of mind.
As you close your eyes, this session quickly lulls you down into deep delta sleep, where the body recovers and grows. The session starts at a waking frequency, soon taking you down deep into delta, with stops at sigificant beneficial frequencies such as the de-stressing 10Hz, the grounding 7.83Hz Schumann resonance (SR), and the deeply relaxing 5.5Hz. You’ll soon find yourself in a deep, healing sleep. If you’re particularly stressed, try listening to Power Chill before starting
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