This study has established specific ultrasound parameters in the use of low-intensity, low-frequency ultrasound stimulation (LILFUS), designed to mimic the brainwave patterns of theta and gamma oscillations observed during learning and memory processes to induce predictable and long-lasting changes in brain function.
https://www.science.org/doi/10.1126/sciadv.adk3198 (Open access)
How was the ultrasound delivered? A fancy science probe? Can I just recreate this wave form and stick my head near a subwofer.
Ultrasound = higher frequency than human hearing
Infrasound = lower frequency than human hearing
Subwoofers have a low resonant frequency. You want a tweeter that can go well above the range of human hearing to get a speaker that can produce ultrasound.
I realized my mistake a few minutes after typing that and was hoping people would just take it as a meme I was thinking the gamma and theta frequencies but that 500khz is the actual important part that needs special tech.
The low intensity, low frequency is the new part…
Ultrasound stimulation has been around for a while