Sleep and eye movement patterns in two groups of retardates.
D002674:Child, Institutionalized; D002940:Circadian Rhythm; D003937:Diagnosis, Differential; D004314:Down Syndrome / Q000175:diagnosis; D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D005133:Eye Movements; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D007361:Intelligence Tests; D011578:Psycholinguistics; D012890:Sleep; D012895:Sleep, REM; D012917:Social Adjustment