Abstract
ABSTRACTThe goal of this study was twofold: at which conceptional age do the spontaneous skin potential responses (SPRs) appear in premature infants; are they related to the sleep cycle as they are in human adults. Twenty nine sleeping infants, conceptional age (CA) 24 to 41 weeks, were investigated with polygraphic recordings. SPRs first appeared at 28 weeks. Their number increased rapidly after 30 weeks CA. They appeared mostly simultaneously with slow wave EEG activity which in premature infants is the EEG pattern of active sleep. Unlike the spontaneous SPRs which in adults occur mainly in NREM sleep, they are in premature and full term newborns well correlated with active (or REM) sleep. The relationships between spontaneous SPRs and autonomic or phasic events of sleep are also studied.
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