This is the slowest band of waves that our brains produce and they occur when we are in deep, dreamless sleep. These waves are very beneficial for the body which restores and heals itself when in this state. The delta state releases anti-aging hormones, including melatonin and DHEA. Human growth hormone (HGH) is another anti-aging hormone that is increased when delta brainwaves are occurring inside the brain, due to the stimulation of the pituitary gland. HGH maintains the skin, bone density, cartilage, and the joints in your body as well as speeds up the healing process of joint and cartilage injuries. HGH can also help heal physical pain.
From a brainwave entrainment effectiveness perspective, it’s my understanding that the response from isochronic tones stimulation starts to diminish over 30Hz and that 40Hz is about the limit for using them. So from what I’ve read on the topic a 100Hz beat wouldn’t work, probably because it’s too fast for the brain to process and synchronise with it.
It may be that you had the volume too loud, but I would expect you to hear the effects of that straight after you’ve stopped listening, not on a day you haven’t used them. It might be something similar to muscle memory, where you suddenly remembered the sound and sensations it gives you as if you were hearing it again. I don’t know how long you’ve been using this type of thing for, but maybe it’s something that will settle down and disappear once you become more accustomed to the sound.
Additionally, most of the studies have been conducted with extremely small samples and the touted benefits are vague. When studying the effects, it would be beneficial to hook each participant up to an EEG, note initial brainwave activity, then post-entrainment, note any changes. Although certain conditions share similarities in brainwave activity, this is clearly not always the case.
“Wow, wow, wow! When I coach people, the first thing I do is help them change their state as quickly as possible – and now it’s as easy as using one of the Brain Salon sessions. I can’t wait to share this program with all of my clients – once they use Brain Salon to easily get into a powerful state, then the work I do is going to take them to levels they never imagined possible…”