The human body uses a variety of different frequencies to communicate with other parts of the brain. These include alpha waves (7-15 Hz), beta waves (20-30 Hz) and delta waves (40-60Hz). All three types of brainwaves have been linked to various mental processes such as memory, attention, concentration and mood regulation. Alpha waves are associated with relaxation and sleep while beta waves are associated with deep thought and concentration. Delta waves are associated with increased alertness, creativity and emotional stability.
In addition to these brainwave patterns, there is another type of brainwave called theta waves which occur at around 1-4 Hz. These brainwaves may or may not be related to any particular function but they do seem to enhance some aspects of cognition.
There are several studies that suggest that certain frequencies of sound can alter brain wave activity and thereby affect the way our brains work. For example, researchers have found that certain frequencies of music can increase blood flow to specific areas of the brain.
Other research suggests that certain sounds can stimulate neural pathways in the auditory cortex, a part of the brain involved in processing speech. There is even evidence to suggest that certain sounds can lead to the release of chemicals associated with emotions such as happiness and relaxation.
Due to the findings of some of these studies, a number of high profile companies have introduced products that produce a variety of sounds including white noise, ocean waves, wind, fire and more. These products are often marketed as being beneficial for relaxation and well-being.
There is even a phone app that claims it can generate specific frequencies (i.e. ISOs) to enhance cognitive abilities.
If certain sounds can affect the functioning of our brains, it seems reasonable to assume that it is possible for a person to build up a tolerance to these sounds and perhaps even suffer from an anxiety condition called “noise fatigue” which occurs when a person is exposed to a constant sound for a prolonged period of time. Noise fatigue can range from mild discomfort to an extreme reaction that involves nausea, dizziness and more.
Are Brainwave Entrainment Audio CDs More Effective Than Noise Machines?
Some companies have taken this research a step further by producing audio CDs that contain a combination of soothing music and sounds, embedded with ISOs. The CDs are intended to be played on a loop for a specified amount of time each day in order to enhance certain brain functions.
These brainwave entrainment CDs tend to make exaggerated claims and as a result they tend to attract a lot of skepticism. It is important to point out that as of yet there is little scientific evidence to suggest that these products can actually alter your brainwave activity.
That said, whether or not the product works, if you enjoy the experience of using it then it can’t hurt. As with most things in life, the key is to do your research before spending money.
My Final Thoughts On Brainwave Entrainment
It’s important to keep in mind that brainwave entrainment is a form of biohacking and as such it should be approached with a “healthy dose of skepticism.” Just because a technique has been proven to work on a small scale doesn’t mean it will work for you.
If you suffer from a disorder such as insomnia or anxiety, it is recommended that you speak to your doctor before using these products.
Having said that, if you are the type of person that has experimented with biohacking in the past and you are interested in taking things to the next level, brainwave entrainment could be an interesting way to boost your mental performance.
Remember, as with any biohacking experiment, understanding the risks and benefits are of vital importance.
Sources & references used in this article:
Isochronic tone augmented biofeedback system by JV Hardt – US Patent 10,039,471, 2018 – Google Patents
A comparison of alpha brainwave entrainment, with and without musical accompaniment by C Doherty – 2014 – esource.dbs.ie
Inducing targeted brain states utilizing merged reality systems by R Moseley – 2015 Science and Information Conference (SAI), 2015 – ieeexplore.ieee.org
Like this by L Curtin – portugalyogaretreats.com
Category: Uncategorized by M Hussain, S Sahudin, WSJW Abdullah – Iranian Journal of Pharmaceutical Sciences, 2019
Audio-tactile stimuli to improve health and well-being by M Curtin – portugalyogaretreats.com
Multi-modal pharmaco-diagnostic assessment of brain health by EO Dijka, A Nijholtb, JBF van Erpc, E Kuyperd… – EuroHaptics 2010, 2010 – Citeseer
Brains that are out of tune but in time by AJ Simon, SJ Martino – US Patent App. 14/773,872, 2016 – Google Patents