That's how I understand it but I would first ask of them.
WARNING ABOUT INFRARED (or ultrasound for that matter)
First off, I've had a reason to feel fine about using infrared. My MRI scan after 2,5 years of use has been seen by 2 doctors, one of them an acquitance and they could see nothing in them.
However, this doesn't translate into it been safe to use for the next 20 years. I've read that even premature, sudden death might be possible.
http://www.sciencebasedmedicine.org/?p=32
Before you try infrared or ultrasound on your brain, read this page entirely, especially Daedalus's comments as he's the one with expertise with cellular biology. He has said that it is unlikely that the effects of infrared be beneficial on the whole. Or that little might be but not the amounts to get significant effects with alzheimer.
There is, I think, somewhat more data on ultrasound than infrared on neurons, but no data on chronic use. The cellular mechanisms by which ultrasound might stimulate the brain are probably going to be different and they might be more tolerant of outside manipulation but we don't know.
So, if you must experiment (as in you're curious about the effects), be very careful, low doses and time (the complicating factor is, while we have an idea of the first, we have even less of the latter).
If you have a condition that might benefit from a brain working better, I suggest participating (if you can) in the gathering of information of the possible damage mechanisms and how it shows in a brain scan or finding people to design us a device for brain imaging done at home (because MRI's done every 2 years or so is pretty expensive).
If you want to forego that, and use the thing, remember that it may not be all that different from using any hard stimulant daily, although with slower tolerance developing. I haven't looked but I think there should be enough data that too much stimulants wear the brain out. While that might not, to be exact, be the mechanism here (more like the heightened ATP causing a chain reaction that when continued long enough, results in apoptosis=cell death), the end result could be the same. No functional brain left or death.
Especially alarming is Daedalu's thought that if you don't take brain scans, you might not notice anything until the whole system collapses.
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