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)

  • entropicdrift@lemmy.sdf.org
    2·
    4 months ago

    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.

    • GluWu@lemm.ee
      2·
      4 months ago

      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.