Scientists did an experiment once with a lady who could hallucinate an image of her deceased father. She started seeing him after he died, they had been close. It didn't cause her any problems though, and she pretty quickly adjusted to it, just her brain's way of remembering her dad. In fact she could usually make him come and go at will. So, if a human stares at a bright flashing light, this shows up in your brain waves. You can't habituate to it or prevent it, your brain registers it. So they set up a chair with a bright flashing light behind it. And then they had the woman state at it, and of course it showed up in her brainwaves. Then they had her hallucinate her father sitting in her chair blocking the light. Boop, no flashing in brainwaves. Just more proof that what we "see" is the brain's construction, processed sensory inputs, but we don't actually directly experience anything.
Only met one ghost and that was 52 years ago.I pinched myself till it really hurt kept shutting and opening my eyes it was still there.This ghost hasn't been to see me again, what sort of a ghost is that.Do you think it got the boot because it didn't scare me, I feel guilty now.