You could call this the positive feedback of negative vibes, but I think in something so spooky, we really shouldn't have the word positive there at all, even in a technical sense.
你可以称之为负面情绪的正向反馈效应， 这在我看来非常可怕， 我们甚至不该使用“正向”这个词，即使只是术语的表达。