ERIC Number: ED080139
Record Type: Non-Journal
Publication Date: 1972
Reference Count: N/A
Sleep State Periodicity in Prematures and Young Infants.
Stern, Evelyn; And Others
An autocorrelation technique was used to determine the periodicity underlying successive recurrences of specific sleep states (Quiet Sleep and Active Sleep). Groups of short (2-3 hour) polygraphic records and individual all night recordings were analyzed. Active Sleep and Quiet Sleep periodicities at 32 weeks conceptional age were 12 minutes. At 36 weeks, 40 weeks (term), and 1, 3 and 8 months, the periodicity of both Active and Quiet Sleep was consistently in the 40-60 minute range. At all ages, the cycle time of one state was consistently longer than the other. The appearance of clear periodicities underlying both states and the similarity of the periodicities found in 36 week records to those found in much older infants' records indicated that this biological rhythm is basic to human CNS functioning. The Index of Rhythmicity values in these records and other investigators' data suggest that this rhythm reaches a mature form by 36 weeks post-conception. (Author)
Publication Type: N/A
Education Level: N/A
Sponsor: National Institutes of Health (DHEW), Bethesda, MD.
Authoring Institution: California Univ., Los Angeles. Dept. of Pediatrics.