Once and for all, there are no human instruments. proulx has stated many times that results from this 1st study will determine if the design and development of a human instrument will be completed. That's if they ever get 10 or 15 people enrolled in the study.
Any confusion about the existence of a human instrument was created and introduced in incorrect statements that appeared on this message board saying this ongoing study would be using a human instrument. Totally false, and the person(s) responsible for this bad information have never retracted, corrected or apologized for spreading it.