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Maturation of EEG activity during sleep in premature infants

1968; Elsevier BV; Volume: 24; Issue: 4 Linguagem: Inglês

10.1016/0013-4694(68)90193-4

1872-6380

Arthur H. Parmelee, F. J. Schulte, Yoshio Akiyama, Waldemar H. Wenner, Marvin A. Schultz, Evelyn Stern,

Neonatal and fetal brain pathology

1. Repeated polygraphic recording of long duration were made of seventeen premature, ten full-term, and five suspected small-for-dates infants. Besides EEG, these recordings included observation of behavior and monitoring of multiple physiological parameters. 2. A 3-digit code was devised for EEG patterns of infants between 28 and 40 weeks conceptional age. The first 2 digits represent the conceptional age at which a variation on the basic pattern, identified by the third digit, generally occurs. The age designations of the code system were substantiated by the distributions of EEG patterns found in records at different conceptional ages. In addition, use of the coding system differentiated small-for-dates infants from prematures. 3. The observations and physiological data were used in defining 2 sleep states: quiet sleep and active sleep. Examination of the distributions of EEG patterns within each state indicated progressively distinct relationships between state and EEG pattern with maturation. Determination of conceptional age and neurological maturation was based on these relationships.