I'm still working towards dealing with my anxieties in a more independent way, but I feel as if I'm not quite there yet. I can inform it's getting better with reminding myself and distinguishing between rational and irrational thoughts, but it can still get the best of me sometimes, as it seemed to have gotten yesterday.

What I'm meaning to ask, is if it's the CSF that can sustain 60 G's, or the brain itself when/if the CSF fails? If the CSF fails to cushion all of the force is there still a remaining 60 G's of force which the brain can tolerate without any cushioning protection? And also, does the skull and skin absorb force before it reaches the CSF?

The reason for these question is because my anxiety lead me to believe I bumped my head into ceiling/wall at low speed, but still. So, yes, as has happened earlier, without successful reminding of the increased anxiety from reassurance, I had to check if the speed and distance could be a sufficient risk of concussion. And yes, it's irrational to believe you can check something like that, but I just wanted to hear if you bump into the wall at 5 cm distance and with speed equivalent of letting yourself fall be able to cause concussive force? Can't remember if it's the neck or the jarring of the skull from impact that causes concussion, but I can tell that the surrounding area of impact wasn't sore and it didn't particularly hurt. It might sound self-inflicted, and I wouldn't be worried if it wasn't because of the fact that I bumped at a slightly greater speed into the wall than estimated.

It wasn't meant to give a bump sound, but I had to see what happened since I am constantly anxious of getting my head into contact with solid objects. With good conscience I can say that this time it's kind of like headbutting the wall at close distance, just enough to hear the skull bump - maybe more like leaning up the wall but letting yourself fall to hit it. I honestly don't know why I felt I had to redo it, just because I thought I hit it. I was pretty sure I could refrain from reassurance but obviously not quite yet apparently. And additionally, do these small bumps sound, feel and look more serious than they really?

It would be a huge relieve if things could be put in perspective with my other questions that's been covered in my other threads. I would like to, if possible, get an answer to which of the following three phenomenons poses the greatest risk of concussive force. Jerking/shaking the head versus bumping head into solid object vs bumping head into moving object (heading a ball etc.), and does it even matter which one of the three it happens to be when discussing such low distance and speed leading most likely to low G forces in general?

I might seem like a black hole demanding endless explanations and answers, but I get the feeling that I've narrowed down my basic fears and in already existing threads. That's why I'm planning only to place my future worries in these pre-existing threads of my own, so it won't seem as overwhelming.