It's not a matter of increasing or reducing brain activity....

It's not a matter of increasing or reducing brain activity. Rather, it's a matter of stimulating the lobes and regions that produce the experience. Jose Delgado was a pioneer in electrical stimulation of the brain, where he produced a whole range of emotions, thoughts and feelings simply by stimulating specific regions of the brain, love, fear, hate, disassociation, etc, even steering animals like they were radio controlled.