I ' m back . V e r y S mallPlaceConfinementdptel the book I read on the subject , if you ' re interested . There are many more factors in solitary confinement that could screw with you , other than the obvious isolation . First of all , a lot of prisoners in solitary are already in bad mental statessuffering from mental illness . Its normal to hear screaming , yelling , and etc at all hours , so sleep deprivation is common . The lack of physical activity seems petty , but its actually a huge deal . Lack of sensory stimulation fucks your head . According to a study , a decline in EEG activity in the brain can be seen after only seven days in solitary confinement . Clinical impacts are similar to that of physical torture , and can last for decades .