Different types of brain waves
Specific frequencies are thought to be involved in specific cognitive tasks.
- During deep sleep, the predominant brain activity occurs with frequencies between 1 and 4 Hertz (delta waves.) Delta waves are associated with learning and motivation.
- Theta waves (4-7Hz) are linked to memory and emotional regulation.
Brain entrainment - where brain cells fire at the same frequency - is a real effect that happens in response to particular rhythmic frequencies perceived by our senses. A deep-pitched musical tone can cause your brain cells to start firing at the same frequency.
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Sounds like hype: there's scant evidence the 'binaural beats' illusion relaxes your brain
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