PHYSIOLOGIC RHYTHMS.

A new physiologic race

Uncovering physiologic mechanisms of circadian rhythms and sleep/wake regulation through mathematical modeling.

Mathematical models of neurobehavioral function are useful both for understanding the underlying physiology and for predicting the effects of rest-activity-work schedules and interventions on neurobehavioral function. In a symposium titled "Modeling Human Neurobehavioral Performance I: Uncovering Physiologic Mechanisms" at the 2006 Society for Industrial and Applied Mathematics/Society for Math...

PATTERN OF PHYSIOLOGIC JAUNDICE AND INCIDENCE OF \"EXAGGERATED PHYSIOLOGIC\" HYPERBILIRUBINEMIA IN IRANIAN FULL-TERM INFANTS USING TRANSCUTANEOUS BILIRUBINOMETRY

Normal full-term infants were followed by serial transcutaneous bilirubinometry over the first week of life. The pattern of physiologic jaundice in our population was similar to that shown for white infants. Mean maximum bilirubin peak was seen on day four of life and was also similar to that shown for American white infants. The incidence of non physiologic hyperbilirubinemia defined as 2...

Breast asymmetry during adolescence: physiologic and non-physiologic causes.

BACKGROUND Pathologic breast conditions are rare in childhood and adolescence. The spectrum of breast disease in the pediatric age group is different from that in adults, and most lesions are benign. OBJECTIVES To describe the causes and characteristics of breast asymmetry in adolescents with normal endocrine profiles and sexual development. METHODS The files of patients with a diagnosis of...

Circadian rhythms.

Circadian rhythms are a ubiquitous adaptation of eukaryotic organisms to the most reliable and predictable of environmental changes, the daily cycles of light and temperature. Prominent daily rhythms in behavior, physiology, hormone levels and biochemistry (including gene expression) are not merely responses to these environmental cycles, however, but embody the organism's ability to keep and t...