Eye Movement Activity during Sleep and Intellectual Function in Mental Retardation

Science  15 Mar 1968:
Vol. 159, Issue 3820, pp. 1256
DOI: 10.1126/science.159.3820.1256


A positive relation was found between the amount of eye movement during rapid-eye-movement or paradoxical sleep and estimates of intellectual level in a group of retarded adults. This result supports the hypothesis that during sleep the brain carries out processes important for cognitive function.