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Why, when you鈥檙e alone, do you sometimes feel like you鈥檙e not?

Eager to find signs of life in our surroundings? Eager enough to see faces in clouds, or tweak out when the house creaks at night?

Dessa investigates some of the most mystical, disorienting and disturbing experiences a person can have. She discovers that neuroscience, the study of our brains, might just help explain this big, important chunk of being human.

(Image: Shadow hand on glass, Credit: Getty Images)