The development of fetal behavioural states: A longitudinal study
- 28 February 1986
- journal article
- research article
- Published by Wiley in Prenatal Diagnosis
- Vol. 6 (2) , 117-124
- https://doi.org/10.1002/pd.1970060207
Abstract
In order to evaluate the development of fetal behavioural states a longitudinal study was performed on 35 healthy fetuses during the last trimester of pregnancy. Fetal heart rate (FHR), gross fetal body movements (FM), fetal eye movements (FEM), fetal breathing movements (FBM) and micturition were simultaneously studied at two‐week intervals from 28 weeks gestation onwards. Well‐defined fetal behavioural states were observed only after 36 weeks gestation. Between 28 and 36 weeks the quiet‐activity cycle of FHR was always detected and some fetal biophysical activites seemed to become related around this cycle.Keywords
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