The original paper:
The Lancet, Volume 378, Issue 9809, Pages 2088 - 2094, 17 December 2011
Bedside detection of awareness in the vegetative state: a cohort study
Dr Damian Cruse PhD a b , Srivas Chennu PhD c, Camille Chatelle MSc d, Tristan A Bekinschtein PhD b, Davinia Fernández-Espejo PhD a, Prof John D Pickard MD e, Prof Steven Laureys MD d, Prof Adrian M Owen PhD a b
the original paper here
The same method applied to MCS patients here.
And another study further validating our approach with a twist to make it stronger.