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Updated: Aug 8, 2026

Electrophysiological Measurements and Analysis of Nociception in Human Infants
Published on: December 20, 2011
The unknown human infant
Insights
This study examines physiological norms in infants with non-Western lifestyles, questioning neonatal weight loss and infant sleep patterns. It explores transitional phenomena as normal human development stages.
Area of Science:
- Human Reproduction
- Infant Development
- Physiology
Background:
- Defining physiological norms in human reproduction is challenging.
- Standard Western infant lifestyles may not represent universal physiological parameters.
Purpose of the Study:
- To establish physiological reference points using infants with non-Western lifestyles.
- To investigate specific infant physiological questions, including neonatal weight loss and sleep patterns.
Main Methods:
- Studied a cohort of 100 infants with distinct lifestyle characteristics (e.g., home birth, no drugs, extended breastfeeding).
- Observed and analyzed infant physiological parameters and developmental transitions.
Main Results:
- Neonatal weight loss was assessed for physiological relevance.
- Physiological sleep-wake patterns in human infants were characterized.
- Transitional phenomena were evaluated as potential normal developmental stages.
Conclusions:
- Infant lifestyle significantly impacts physiological development and norms.
- Further research is needed to understand the mother-infant physiological connection, particularly concerning maternal weight loss and infant illness.
Abstract:
What is physiological? It is often difficult to answer this kind of question in the field of human reproduction. That is why we propose to take, as a reference, a population of one hundred infants whose lifestyle is, in many respects, different from the standard Western norm. They were born at home without any drugs, share the mother's bed, were breastfed for more than a year, and so on. This study raises questions such as: --Is the neonatal loss of weight physiological? --What are the physiological sleep-wake patterns of the human infant? --Are the transitional phenomena normal stages of human development? --Why are some infants ill when their mother loses weight?
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