He wondered whether the brain waves of EEG could convey thoughts through space ... The average overall activity is a mix of many different frequencies, with the five main ones called delta, theta, ...

During a typical night’s sleep, the brain’s activity fluctuates. The first three stages of sleep are characterised by three types of brainwaves: alpha waves, theta waves and delta waves.

Gamma brain waves are rhythmic electric processes in nerve cells called neurons. Nerve activity in the brain allows for communication throughout the brain to carry out functions such as memory ...

The different types of brain waves as they appear on an EEG. Delta waves (top) are slow and low-frequency, while gamma rays ...