(IMO: Small effects with cheap devices, unclear side effects; larger effects with medical-grade lasers, but easy to hurt yourself and also unclear side effects; having the sun shine red/IR light at you probably works better.
Define “small” ? I’m using ~100W of NIR + RED and my current EEG feedback + NIR stimulation prototype will be at 24W (but with clever use of interference, which no devices do at the moment afacit, if you know of one I’d love to buy it though)
Define “small” ? I’m using ~100W of NIR + RED and my current EEG feedback + NIR stimulation prototype will be at 24W (but with clever use of interference, which no devices do at the moment afacit, if you know of one I’d love to buy it though)
Hmm, interesting! What devices do you use?
(I meant small effect sizes)