It's interesting you mention the experiment. I mentioned to you once before about the books I'd read positing that our thoughts are not our own. They are of foreign origin. And to see this one is directed to stalk their own thoughts and such.
I also over many years have had thoughts and images that had no apparent reason for their appearance in my mind. The images more obvious than the verbal onslaught that normally runs through my mind. Images sometimes of, as you mention a horrific nature. That has zero connection to anything i was thinking at the time.
I hated Dr. Fraud almost instantly. And as you, was drawn to Jung when one who was charged with counseling me by the courts when I was young lead me to read both Jung and delve into a branch called Gestalt.
It's been many years since reading either, but I was left impressed with both.
One last thought that isn't directly tied to this. The same man who I looked up to as a mentor also had me read a book called
https://www.goodreads.com/book/show/629.Zen_and_the_Art_of_Motorcycle_Maintenance
It was an excellent book, especially for myself at that time. I was such a contradiction then. I was quicker mentally, physically I was something else as well. Yet my arrogance was also tied deeply to a despair of not understanding. The book was a great examination on how one can drive themselves to being labeled certifiably crazy for questioning the so called foundations around is. In this mans case, it was the definition of quality. The man who wrote it was a college professor, and went off the end trying to define quality.
The book itself is set as he seeks to put his life back together after being released from the mental facility. He takes his obnoxious resentful son on a cross country trip on his motorcycle trying to bond with him as he seeks to find himself in all of this.
Sadly, I picked up a more current copy of the book a few years ago, and his son was later murdered in a robbery. I didn't like the kid but felt sad for him to have lost his son.
In most Hindu/Buddhist philosophies there are six sense - the mind, not as some psychic ability, but really as a 6th sensory input. From that POV then we do not own any thoughts, just merely observe them from some separate awareness.
Such an attitude would make it harder to follow any actual projected external thoughts. How hard that may be in reality, I can't say. I recall Steven Greer mentions a psychic attack he was able to repel, using a similar technique. So one cannot push the waters back, but to realise you can let them wash over you without being swept away. Subtle and powerful, and hard.
But from what you are saying, that none of the thoughts are our own, then maybe that's the test - to ignore them all. lol.
I may also have mentioned this before. I came into the possession of a unique volume pf psychiatric notes from 1895. This included one guy who claimed the gov agents were sending waves into his home and beaming thoughts into him and his family. 1895!!
I've tried really hard not to get to deep into the energy aspects of this. Some of my more personal experiences would be considered crazy, and coupled with things I've read as well as patents I've seen it has occurred to me in these recent years the crazy ones are those who don't view this as not only possible but taking place all around us both naturally and unnaturally.
One example I'll share here is I rarely remember dreams. Two that I remembered were made memorable because something/someone in those dreams wanted me to wake up in the dream and understand it was a dream. Both times resulted in my waking up in a panic. I believe because it did occur to me that it was a dream and there was an intent outside myself interacting with mine on that kind of level.
I don't mind going into the energetics, but very much up to you what to share in public.
One other thought may help. We don't usually think of our thoughts as having a location - we think of thinking "in our heads" but don't localise it any further. When I was "stuck in the void", and had regained my thinking skills, it was interesting that the thoughts were way off in a corner. Amid the expanse of awareness this little voice seemed quite far away. Was me, but was only a part of me.
Thus from that POV it made sense this idea of thoughts being some input, rather than defining our self, in some Cartesian sense. The effect lasted maybe a couple of days - shame, as there is training to try and stabilise that condition. Vision was also impossible to play that "at a distance" routine - too much in yer face!
Anyway, just thoughts on means of protection.