Into the Gray Zone: A Neuroscientist Explores the Border between Life and
  Death
Author: Adrian Owen
From: Scientific American - 07/2017

"What if a victim of brain trauma who is supposedly in a vegetative state is
actually fully awake but unable to even blink an eye to communicate? During
the past 20 years advances in neuroscience have shown that this sometimes
happens. Neuroscientist Owen explains how his team began using PET and
functional MRI scans in the late 1990s to detect brain activity in vegetative
patients. Their brains responded like those of conscious people to photo
graphs of loved ones arid recordings of recognizable yet neutral words such
as "candle," "lemon" and "sofa." Some patients survive "the gray zone," come
out of their vegetative state and live to tell about it. But many do not,
including some of Owen's own loved ones, who, he says, drove him beyond
pursuing science for science's sake." - Andrea Marks

By Simon and Schuster
http://www.simonandschuster.com/books/Into-the-Gray-Zone/Adrian-Owen/9781501135200

From Amazon
https://www.amazon.com/Into-Gray-Zone-Neuroscientist-Explores/dp/1501135201

Adrian Owen
http://intothegrayzone.com