Long-term oscillations in the sleep/wake cycle of infants |
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Authors: | L Diambra CP Malta |
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Institution: | a Centro Regional de Estudios Genómicos, Universidad de La Plata, 1888 Florencio Varela, Buenos Aires, Argentina b Instituto de Física, Universidade de São Paulo, R. do Matão, Travessa R, 187, 05508-090 São Paulo, SP, Brazil c Department of Engineering, University of Leicester, LE1 7RH Leicester, United Kingdom |
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Abstract: | The development of circadian sleep-wakefulness rhythm was investigated by a longitudinal study of six normal infants. We propose an entropy based measure for the sleep/wake cycle fragmentation. Our results confirm that the sleep/wake cycle fragmentation and the sleep/wake ratio decrease, while the circadian power increases during the maturation process of infants. In addition to these expected linear trends in the variables devised to quantify sleep consolidation, circadian power and sleep/wake ratio, we found that they present infradian rhythms in the monthly range. |
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Keywords: | Sleep/wake cycle Circadian consolidation Infradian rhythms |
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