Everybody has "Low Beta Waves". Beta waves are the frequency range of human brain activity between 12.5 and 30 Hz, and are associated with normal waking consciousness.
They are split into three sections:
Low Beta Waves (12.5–16.5Hz)
Middles Beta Waves (16.5–20.5Hz)
High Beta Waves (20.5–30.0Hz)
Those "Beta Games" were once pitched as "treatments" for attention-deficit disorders, but have not be proven to actually cure anything.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.