title: Delta and spindle components in compressed spectral array during nocturnal sleep in infants with cerebral palsy.
abstract: The correlations between the delta and spindle components in compressed spectral array in 21 mentally retarded children with cerebral palsy (CP) (from 4 months to 5 years of age) and 32 reference mentally retarded children of no abnormality with the exception of psychomotor retardation (from 4 months to 12 years of age) were studied throughout nocturnal sleep. In 11 (52%) out of 21 CP cases and 27 (84%) out of 32 reference cases, periodic changes of delta and spindle rhythm powers were noted in sleep EEG (group A). In 5 (24%) other cases in CP and 5 (16%) reference cases delta but not spindle rhythm powers were found (group B), and in the remaining 5 (24%) CP cases neither delta nor spindle rhythm powers were found throughout nocturnal sleep (groups C). A significant decrease in the developmental quotient (DQ) was found in group C as compared with group A in both CP and reference cases. Moreover, a significant decrease in DQ was also found in group B as compared with group A of reference cases.
mesh_terms: D002547:Cerebral Palsy / Q000503:physiopathology*; D002675:Child, Preschool; D003700:Delta Rhythm; D004569:Electroencephalography; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000503:physiopathology; D008297:Male; D012894:Sleep Stages / Q000502:physiology*