Other studies [3,4] have shown that, in an environment with negatively charged particles predominant, charged particles can effectively activate the body's immune system, smooth blood flow and stabilize the autonomic nervous system. A clinic test conducted with a group of 33 patients (16 females and 17 males) showed that charged particles (such as negative oxygen ions) had a significant impact on sleep quality: sleep latency was shortened, and slow-wave sleep duration was prolonged .
These studies provide a new non-drug, non-invasive way for those with insomnia and sleep deficiency to achieve high-quality deep sleep. This novel approach is realized by tuning the amplitude and frequency of the charged particle wave to approximately 0.8 Hz, a frequency for deep sleep. Subsequently the externally generated particle wave will stimulate endogenous slow brain waves, triggering spontaneous slow wave sleep.