Erotic electrostimulation sex toys are another type of sex toy for both men and women. The act of employing electricity for sexual stimulation is referred to as erotic electrostimulation. Medical transcutaneous electrical nerve stimulation (TENS) machines were commonly accessible by the mid-1970s. The machines work by electrically stimulating nerve endings and delivering stimulation impulses to the brain. The same mechanism applies to electrostimulation; when the brain receives a signal of stimulation from the genitals, pleasure hormones are released.