Are they bullshit or what? I have been looking for scholarly papers and anything repeatable. If I can trigger the placebo effect it looks like I should be buying some crystals to go with my monitor.
<a href="http://www.transparentcorp.com/research/" rel="nofollow">http://www.transparentcorp.com/research/</a><p>Lots of peer-reviewed literature here. They are definelty not placebo, I have personally seen their effect through EEG.
I've used them. The effect is slight but seems to be there. At the very least it's a nice soothing background sound.<p>There's a nice app for iOS called Binaural, and an open source program called sbagen.