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Direct linkPorter, Christin L.; Jones, Blake L. – Infancy, 2011
Using electrocardiogram data with 78 six-month-old infants, this study examined the presence or absence of brief orienting bradycardia during the onset of maternal arm-restraint and subsequent differences between infants on behavioral organization during restraint. Results showed that 45 of the infants exhibited brief episodes of bradycardia at…
Descriptors: Crying, Infants, Emotional Response, Measurement Techniques
Lin, Hung-Chu; Green, James A. – Infancy, 2007
Acoustic properties of the cries of 14 infants were evaluated at both 2 and 4 weeks of age when the infants were lying in a supine position and when they were sitting upright in a car seat. In the upright position, infants' breathing was more rapid and showed less individual variability. The fundamental frequency of their cries increased in the…
Descriptors: Infants, Individual Differences, Acoustics, Human Posture
