| Frequency range | Brainstate Name | Associate With: |
| 13-40 Hz | Beta waves | Alertness |
| 7-13 Hz | Alpha waves | Relaxed but awake |
| 4-7 Hz | Theta waves | deep meditation |
| <4 Hz | Delta waves | Deep dreamless sleep |
The exact boundaries between ranges vary among definitions, and there is no universally accepted standard
The dominant frequency determines your current state. For example, if your alpha waves dominate, you are in the alpha state (this happens when you are relaxed but awake). However, also other frequencies will be present, albeit with smaller amplitudes. Gamma waves aren’t usually your dominant frequencies.