Nine women who met DSM-IV criteria for a MMD with onset during pregnancy or within 1 year postpartum underwent a trial of either early-night sleep deprivation ( ESD ) , in which they were sleep deprived in the early part of one night and slept from 03:00 -07:00 h , or late-night sleep deprivation ( LSD ) , in which they were deprived of sleep in the latter part of one night and slept from 21:00 -01:00 h. Mood was assessed before the night of sleep deprivation , after the night of sleep deprivation , and after a night of recovery sleep ( sleep 22:30 -06:30 h ) by trained clinicians , blind to treatment condition , using standardized scales .
