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Most broadly, Neubauer said, dreams are a type of mentation, or mental activity, that occurs when people are asleep and generally consists of vivid, hallucinatory visual content that is often bizarre or has irregular narratives.

Scientists don’t actually know why humans experience sleep mentation, a fancy name for dreaming.

Their somber conclusion by the end of March: “No mentation.”

The world measured, modeled and ultimately predicted by physics is the world of perceptions, a category of mentation.

The voids in my mentation pattern move strangely, as if they have heard these words before.