What is the definition of Instrumental Human Experiments?

"Instrumental human experiments" is like saying that scientists have been using people as test subjects for their bizarre and often disturbing experiments, without really caring if they're feeling a little... off-balance. Imagine this: "In the quest for a perfect cup of instant coffee, researchers used volunteers to experiment with turning their minds into synchronized beeps on a frequency scanner, completely disregarding the fact that these beeps were more likely to trigger existential dread than caffeine buzz."