1. Volume 15, Issue 4, Pages 393-400 (April 2014)
The importance of polysomnography in the evaluation of prolonged disorders of consciousness: sleep recordings more adequately correlate than stimulus-related evoked potentials with patients’ clinical status 
Stefano de Biase, Gian Luigi Gigli, Simone Lorenzut, Claudio Bianconi, Patrizia Sfreddo, Gianluca Rossato, Federica Basaldella, Matteo Fuccaro, Antonio Corica, Davide Tonon, Fabio Barbone, Mariarosaria Valente 
Sleep Medicine 
Volume 15, Issue 4, Pages (April 2014)
DOI: /j.sleep
Copyright © 2014 Elsevier B.V. Terms and Conditions

2. Fig. 1 Sleep spindles in a vegetative state patient.
Sleep Medicine  , DOI: ( /j.sleep )
Copyright © 2014 Elsevier B.V. Terms and Conditions

3. Fig. 2 Rapid eye movement sleep in two vegetative state patients.
Sleep Medicine  , DOI: ( /j.sleep )
Copyright © 2014 Elsevier B.V. Terms and Conditions

4. Fig. 3
Sleep hypnogram in two vegetative state (VS) patients showing rapid eye movement (REM) sleep (patient 1 and 4), in a VS patient not showing REM or non-REM sleep alternation (patient 8), and in a minimally conscious state patient (patient 28).
Sleep Medicine  , DOI: ( /j.sleep )
Copyright © 2014 Elsevier B.V. Terms and Conditions