Do you think human beings perceive anything that cannot be detected and measured,
No. I'm not religious or mystical and I don't think humans have any magic non-physical senses. I don't believe there are things like vampires that can seen but not recorded on film, for example. No ghosts or souls.
other than whatever subjective meaning we attach to what we perceive [so far]?
What we do have is pattern recognition, and we are often better at knowing what to pay attention to. We can be better at understanding the significance of what we're sensing.