Delta waves (0.5-4 Hz) signify a state of deep sleep. A binaural beat with a frequency between 4 and 7 Hz, for example, is more likely to align with theta brain waves, promoting sleep and relaxation.

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.

Slow-wave sleep plays a crucial role in strengthening memory by enhancing synaptic connections in the brain, with new ...

The participants experienced brief but statistically significant increases in delta brain waves within moments of impact, ...

are a type of electrical wave arising in the brain during deep sleep. "Delta" waves comprise a certain frequency range that shows up in an EEG. These are slow brain waves that can arise outside ...