5 Different Brain Waves and Why They Are Important

In the way the neurons in our brain communicate are through pulses of electrical activity also known as brain waves. There are 5 types of brain waves based on their frequency of oscillations. From slowest to the fastest, the five frequencies in which our brains function are:

• Delta Waves

• Theta waves

• Alpha waves

• Beta waves and

• Gamma waves

How can we measure brain waves?

Our brains operate at different frequencies at different times, based on our physical and emotional state. These frequencies are measured in cycles per second or Hertz (Hz). These said frequencies or waves can be measured by a test called an electroencephalogram (EEG).

Gamma Waves

Gamma waves are of the highest frequency on the spectrum. Waves over 30 Hz and above belong to this level and are associated with high levels of cognition. Gamma waves are produced by our brain when we are intensely focused on something or fully engaged in solving a problem.

Beta Waves

These waves tend to measure in the 12 to 38 Hz range and lie just below gamma waves on the spectrum. These are the brain waves that dominate when you’re awake, alert, and engaged.

Beta waves are associated with being in a state of focussed attention, cognitive thinking, problem solving etc. One tends can have slower or “low beta” waves that tend to occur more when you’re mulling over something.

Alpha Waves

Alpha brain waves are situated in the middle of the spectrum of brain waves. They tend to measure between 8 and 12 Hz. Our brains operate in these frequencies when we are in a relaxed state and indulge in positive thinking.

Theta Waves

These waves operate in the range of 4-8Hz. Theta waves are produced by our brain when we are in REM sleep, which is a state of deep relaxation and mediation. It is one that encourages creativity.

Delta Waves

All the way at the bottom of the spectrum of brain waves — below theta waves — are the low, deep and slow delta waves.Both delta waves and theta waves occur when you’re asleep, but delta waves are the waves that dominate when you’re in a period of deep, restorative sleep. They measure in the 0.5 and 4 Hz range.