The Science


You and Your Brainwaves - The Basics

A key function of SmartSound™ is to gently change (modulate) your brainwaves while you listen.

This has many potential applications and benefits ranging from enhanced focus and alertness to sleep induction, stress management, and much more.

For a taste of this experience try our FREE Mini-D-Stress session.

To find out more please read below.


Additional information


What are brainwaves?

Brainwaves are essentially your neurons communicating. They occur throughout your brain as rhythmic waves of synchronised electrical activity. Different brainwaves (and combinations thereof) correlate to particular physiological processes and states of consciousness, from deep dreamless sleep to heightened focus and awareness.

Brainwave frequencies are identified by their bandwidth (in Hertz or cycles per second) and can be measured using an electroencephalogram (EEG). You can see one of our EGG 'brain maps' elsewhere on this site. 

In descending order - fastest to slowest - your major brainwave frequencies are gamma, beta, sensorimotor rhythms (SMR), alpha, theta, delta and sub-delta. (For more information see 'Brainwave Frequencies and Effects').

Although one bandwidth may be dominant at any given time - such as delta during deep sleep, this incredibly complex system involves constant interplays between frequencies (including 'coupling' where one rhythm nests within another) and other phenomena not yet fully understood by researchers. 

Dominant brainwaves and states of consciousness

Like a vast polyrhythmic orchestra, your brain is constantly producing different 'suites' or combinations of brainwave frequencies and patterns. Those that are dominant at any given time will be indicative of your state of consciousness and produce a characteristic 'signature' or physiological effect.

For example, brainwave patterns associated with stress, panic or anxiety often correlate with high-range beta frequencies and the production of stress hormones like cortisol and adrenaline, accelerated heart and breathing rates and other fight-flight-freeze phenomena.  While potentially lifesaving in an emergency, this kind of survival response can severely impact our health and wellbeing if chronic and unresolved.

Conversely, when you're feeling calm but mentally clear and alert, as may be the case if you're dominant in the upper alpha range, your brainwave patterns tend to be much more coherent, resulting in optimal heart and breathing rates and so on.

Neuroplasticity and brainwaves

The brain of course is now known to be neuroplastic - capable of changing and adapting throughout life. And while brainwave patterns have been shown to alter over time as a result of practices such as long-term meditation or repetitive exposure to certain stimuli, they can also be temporarily influenced and altered (to a greater or lesser degree) by your thoughts and emotions, exercise, psychotherapy, nutrition, pharmaceuticals, technology and so on.

A simple example is the caffeine in your coffee, a stimulant known to temporarily boost beta brainwaves and therefore, alertness. Some research even suggests that eating certain nuts on a regular basis can strengthen brainwave frequencies associated with cognition, learning, healing, memory and other key brain functions.

And of course, the maladaptive (as opposed to beneficial) neuroplastic changes caused by trauma, chronic stress, depression and other conditions are well documented.

The point here is that brainwave patterns can be influenced and altered to varying degrees by a great many things, and even specifically targeted using technologies like SmartSound™. 

Brainwaves can get ‘stuck' and 'out of balance’

Unfortunately, the ability to access optimal brainwave patterns for a given task or situation is not always as easy or automatic as it should be. Problematic brainwave patterns can become 'hardwired' as the default and highly resistant to change due to long term conditioning and habituation, trauma and so on.

Not surprisingly, being 'stuck in the wrong gear' at any given time (neurological dysregulation) can greatly impact your day to day wellbeing and performance.

Those with ADHD for example, often produce counterproductive slow wave patterns when faced with tasks requiring concentration which would normally involve beta activity. To help counter this, and excessive diurnal slow wave activity in general, they may be prescribed Ritalin or other stimulant medications known to encourage faster, beta brainwave activity.

Depression is also often associated with abnormal slow wave production, especially during the day - resulting in a lack of motivation and energy amongst other things. Clinical sound research suggests that one way to help alleviate depression is to counter slow wave production by exposing the brain to faster frequencies such as beta 1 or 2 during the day. And, as you'll read in 'Brainwave Frequencies and Effects', both alpha and gamma stimulation have also proven helpful.

Conversely, for those with insomnia or other sleep onset issues, there's often a problem 'shifting down' from fast, alert beta brainwave activity (and its accompanying 'mind chatter'), at bedtime. Clinical studies suggest such conditions may be assisted by inducing the slower 'sleep' frequencies of alpha, theta and delta at or around bedtime - supplemented by exposure to beta or SMR stimulation during the day to assist with alertness and concentration.


We hope this has helped you understand some of the basic principles involved in 'brainwave management'. Better still, why not have a direct experience by trying our FREE 'Mini-D-Stress' session! 


         SmartSound™ - Hearing is Believing!


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General Disclaimer: NeuroSonica SmartSound™ products are included in the Australian Register of Therapeutic Goods as a Class 1 Medical Device. Individual results will vary. Contraindications and age restrictions apply. If symptoms persist, talk to your healthcare professional. If you have any contraindicated conditions including  serious medical, psychological or psychiatric conditions, are susceptible to seizures or have any other neurological or neurorespiratory conditions consult with an appropriate healthcare professional before using our products. If you experience any unpleasant or adverse effects discontinue use immediately and consult your health care provider. We do not render any form of medical, psychological or psychiatric advice. All Website and social media content of NeuroSonica, our affiliates or third parties, are for educational  purposes only. The buyer/user agrees that NeuroSonica, its affiliates and/or third parties are in no way liable to you or anyone else for any loss or damage, however caused (and whether direct, indirect, consequential or economic) which may be directly or indirectly suffered in connection with the use of our products, this Website or websites of other entities linked to it. It is a pre-purchase condition that the buyer/user of our products agrees to assume full responsibility thereof and to abide by any and all terms and conditions concerning their use. Use only as instructed - NEVER while under the influence of drugs of any kind, using other devices that may affect brainwave activity, operating machinery or equipment, driving or any other potentially hazardous activities. This general disclaimer is not restricted or modified by any additional specific warnings or disclaimers.

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