Hello.

Are there DIY projects to build a "thinking cap"?
There are some users of TcDCS, but that is the most primitive and inaccurate technology
1. Transcranial Direct Current Stimulation.
2. Transcranial Magnetic Field Stimulation.
3. Transcranial Ultrasound Stimulation <= The holy grail, deep-focusable etc..

Is it possible to buy suitable focusable capacitive micromachined ultrasonic transducers ("CMUTs")?
Where can I buy it?

Is this the same technology ?:
youtu be/kaoO5cY1aHk

We need a helmet with lots of CMUT.
Or (cost and effort) a helmet with locally movable CMUT emitters.

And a electronic, that controls strength, frequenzy, pulse rate, focus (depth) etc..


Early military experiments:
science.dodlive mil/2010/09/01/remote-control-of-brain-activity-using-ultrasound/