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Understanding Brainwave Entrainment: The Impact of High Frequencies Before Bedtime


Sleep is really important for our overall health and well-being, affecting everything from cognitive function to emotional stability. In the quest for better sleep, many […]

Sleep is really important for our overall health and well-being, affecting everything from cognitive function to emotional stability. In the quest for better sleep, many individuals turn to brainwave entrainment, a method that uses sound waves to influence brain activity. However, the frequency of these sounds can have different effects on the brain, and choosing the wrong frequencies before bedtime could counteract the benefits you seek. In this blog post, we’ll look at what happens when you use higher frequencies before sleep, as opposed to the recommended lower frequencies.

What is Brainwave Entrainment?

Brainwave entrainment is a process where you synchronise your brainwaves with external stimuli, usually audio or visual cues, to induce a specific mental state. This technique is based on the brain’s natural tendency to align its brainwave frequencies with the rhythm of external sounds, a phenomenon known as the ‘frequency following response’.

The Role of Frequencies in Brainwave Entrainment

Theta waves (4-7 Hz) are linked to meditation, light sleep and relaxation.
Alpha waves (8-12 Hz) are involved in states of wakeful relaxation.
Beta waves (12-30 Hz) are common during active thinking and problem-solving.
Gamma waves (30 Hz and above) are associated with high-level cognitive functioning and information processing.

The Effects of High Frequencies Before Bedtime

When you’re trying to get to sleep, the idea is to encourage your brain to slow down. This means moving from the alertness of Beta frequencies down to the restful and restorative Theta and Delta frequencies. But what if you use higher frequencies instead?

1. Increased Alertness: High frequencies, especially those in the Beta and Gamma ranges, are known to promote alertness and cognitive activity. Using these frequencies before bed can lead to increased brain activity, making it harder to fall asleep.

2. Reduced sleep quality: Instead of promoting the deep, restorative stages of sleep, high frequencies can keep the brain in a lighter, more active state. This can significantly reduce sleep quality, leading to fatigue and a lack of refreshment upon waking.

3. Difficulty in relaxing: Lower frequencies naturally facilitate relaxation and the release of stress, preparing the body for sleep. High frequencies might increase stress by keeping the brain active and on its toes.

4. Delayed sleep onset: Keeping the brain engaged in active thought processes can delay the time it takes to fall asleep. This not only cuts into sleep duration but can also alter sleep patterns, impacting overall health.

Here are a few tips for getting the most out of brainwave entrainment for sleep:

– Start with alpha waves: This is a great way to relax before bed.
– Then move on to theta and delta waves: These frequencies are great for deepening relaxation and encouraging sleep.
– And finally, consistency is key: If you use brainwave entrainment regularly, it can help you get a better night’s sleep over time.


If you understand and apply the principles of brainwave entrainment correctly, you can improve your sleep quality and overall health and productivity.


Marko Kadunc

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