Support WBURInside The Hole: What Happens To The Mind In Isolation?Play26:26Download AudioShankar VedantamMaggie PenmanRenee KlahrJennifer SchmidtRhaina CohenTara BoyleApril 03, 2017 ShareIn the Secure Housing Unit (SHU) of Pelican Bay State Prison, inmates spend 23 hours a day alone in their cells. (LA Times via Getty Images)
In the Secure Housing Unit (SHU) of Pelican Bay State Prison, inmates spend 23 hours a day alone in their cells. (LA Times via Getty Images)