Is there any reason why it’s not physically possible to focus a current from an external headset to a location inside the brain? For a non-invasive equivalent of deep brain stimulation? Too much scattering?
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Just spoke with
@AdamMarblestone and he mentioned some techniques building towards noninvasive deep brain stimulation. You can have two different high-frequency electrodes, each too fast for neurons to pick up, but which interfere & resonate at a slower frequency, so...1 reply 0 retweets 6 likesShow this thread -
they don’t stimulate neurons near the scalp where the electrodes sit, but do stimulate them at an intersection point deeper inside the brain.
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Alternatively, ultrasound waves in a magnetic field can create an electric current; so if you focus ultrasound at a point inside the brain, and have an ambient magnetic field around, you can get focused deep brain stimulation.
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Yay, yes these:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5520675/ …
https://neuroscience.stanford.edu/research/funded-research/remote-and-localized-neural-activation-using-sonomagnetic-stimulation …
@graemedmoffat mentioned the first as well
They need work but I bet will be awesome... and there may be others
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