The belief that there is a non-biological entity underlying consciousness (aka Ghost in the Machine) is a good start for Jack Snow's short story "Midnight."
Snow wrote many ghost and fantasy shorts and Midnight is one that will keep you reading because ...it begs the question, do you think we are sometimes operated by otherworldly phantoms?
Stop by Tales of Terror Blog for a free read:
http://paulacappa.wordpress.com/2014/...