So I'm creating a world in which an advanced psionic system exists. On a distant planet there was an AI rebellion resulting in the death of 95% of the planet's population and the remaining survivors are constantly being driven mad by psionic waves broadcasted by the rebelled machines. The whole planet is perfectly covered by the range of the psionic emitters.
The impact of those waves is rather complex - they can cause horrible and extremely detailed visions, for example you see yourself being shot to death by mad bandits or something like that. What is more, the AI can somehow scan your mind and prepare a detailed vision just for you. So, for example, let's assume you've caused a car accident in which someone has died. The psionic waves would then make you experience this traumatic event once more making you feel like this vision is the true reality rather than a flashback from the past. It could possibly involve some other aspects which would intensify the effect, like confronting the victim's family even if this has never happened during the real course of action.
Now, the psionic grenades. Press a button, wait a few seconds, boom, the psionic field is established and you can now communicate with those who fell within its effective range. They come in two variants - the scouting one and the combative one. The scouting model makes you capable of reading the target's mind by asking questions and making the target unable to not tell the truth, with all communication occurring in the attacker's and target's heads - no speaking and so on. Scouting version does not drive the target mad, it only retrieves information. The combative one, however, just drives you insane in a way described in a previous paragraph.
Last but not least, there are two versions of psionic attacks - direct and indirect. Direct comes from being, well, directly attacked by a psionic warrior/falling within the range of a psi grenade/stuff like that. Direct attacks generate the most devastating results. However, the indirect ones are caused by the prolonged exposure to the waves broadcasted across the planet and increase your madness only a little, so, let's say, you're a bit easier to annoy today than yesterday. What is important, unless treated with the calming psionic waves (didn't mention them before, but they're rather not that important to me) the damage will be permanent and is going to stack, effectively driving the planet's population completely insane after X years. The indirect attacks can also cause the effects of the direct ones from time to time, especially if being close enough to the nearest psionic emitter.
And so after thinking it out I ended up with a system which, I can say, works thanks to some kind of "magic", but I simply don't want to, so my main question is: what possible rational, and at least a bit scientific, explanations justifying the described system working could be used?
[EDIT] As pointed out in the comments, I should have specified the exact abilities the psionic system grants, so here goes the list:
-reading the human mind
-making a human being angry/sad/irritated/experience other similar feelings
-driving someone mad in a way, let's say, a drug addiction can (generating disturbing, surrealistic visions and so on)
-exposing someone to detailed and terrifying vision like death/death of a close relative/end of the world/closest friends wanting him dead/contracting a painful and terminate illness and so on
-making someone experience a traumatic event from one's past in a way which would feel so real like "it's happening right now!" rather than a standard flashback
So this excludes telekinesis, pyrokinesis etc. Only pure mind-related activities, without interacting with matter.