Is kava psychoactive?

Could you please elaborate on the following query: "Is kava psychoactive?" I'm curious to know if kava possesses any mind-altering properties that classify it as a psychoactive substance. I've heard it's used for relaxation and anxiety relief, but I'm not sure if it actually affects the brain in a significant way. Could you provide some insight into this? I'm interested in understanding the scientific basis, if any, behind its potential psychoactive effects. Thank you for your time and assistance in addressing this question.