https://flashbak.com/the-therapeutic-vibrator-wonderful-images-from-high-frequency-electric-currents-in-medicine-and-dentistry-1918-41823/
https://flashbak.com/the-therapeutic-vibrator-wonderful-images-from-high-frequency-electric-currents-in-medicine-and-dentistry-1918-41823/
It’s just that much closer to the Woo-Hoakes lobe of the brain, which is responsible for controlling the placebo effect in most mammals
I wasn't expecting an intelligent answer that made sense, but there it is