Ive been targeting the Right Insular Cortex ever since I got my US-2000, on MEDIUM. It has been beneficial. Last night despite the warning, I tried it on HIGH intensity for giggles (I know, I know..). I thought I'd share my experience for the sake of science and anyone curious: In short it reminded me of a bad trip. Late at night I placed the device on my head, and within seconds I felt like my heart was racing, and that I was out of breath. I laid down on my bed, and my sense of self was dissolving, sending my brain into panic mode. Similar to the beginning of n drug induced EGO death. My mind was deepfried, struggling to form any coherent thought, while a rush of emotions came on, fear sadness surprise etc. Slept it off, but it was hard. Like trying to sleep on a bad fever. Waking up occasionally throughout the night, with incoherent thoughts calling me to act. Like there was something I needed to do or pay attention to. Conclusions: There was a lot of stuff stored in there. Targeting this area on HIGH triggered an intense rush that overwhelmed me. Completely different from MEDIUM intensity. Is it unsafe at this intensity ?