Reading this book at the moment and getting some insights as to the coping mechanisms for one in long term captivity, including the longing to catch the eye and alert someone, yet not doing so out of fear...
http://www.guardian.co.uk/world/2010/sep/26/ingrid-betancourt-even-silence-end
"Even Silence Has an End by Ingrid Betancourt
Ingrid Betancourt spent six years as a prisoner of Farc in the Colombian jungle. Her memoir is not for the faint-hearted, says Janine di Giovanni"
http://www.guardian.co.uk/world/2010/sep/26/ingrid-betancourt-even-silence-end
"Even Silence Has an End by Ingrid Betancourt
Ingrid Betancourt spent six years as a prisoner of Farc in the Colombian jungle. Her memoir is not for the faint-hearted, says Janine di Giovanni"