Abstract
The purpose of this pilot study was to determine the degree of consistency in individual state profiles for 12 normal human fetuses examined on three separate occasions between 38 and 40 weeks gestation. For each fetus, heart rate and eye and gross body movements were monitored continuously for two consecutive 120-min periods on each of 3 days. Fetal behavioral states were assigned using the criteria of Nijhuis et al. [1]. The percent time spent in each behavioral state and in transition and insertion periods was determined for each of the three 4-hr study sessions; a within-subject analysis of variance (ANOVA) was performed to obtain an objective measure of state profile consistency for each fetus. For the study population as a whole, there was a large range in the distribution of the state profile consistency statistic (F): two fetuses exhibited no consistency in their state profiles (F = 2.5, F = 11.2), the within-subject state profiles for three fetuses were virtually identical over the three study se...
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