Abstract:
:Cardiac measures of heart period and high-frequency heart period variability are increasingly employed as dependent variables in studies of social and emotional development in infancy and childhood. This study describes significant developmental increases in these measures in a longitudinal sample assessed at 4, 9, 14, 24, and 48 months of age. In addition, developmental changes in the characteristics of the heart period power spectra are described. These changes have implications for the quantification of high-frequency heart period variability in infancy and childhood. First, shorter analysis epoch lengths may be used for younger infants. Second, the commonly used high-frequency band for infants (0.24-1.04 Hz) appears to reach its practical limit at an age of around four years. Findings are discussed in relation to the design of developmental psychophysiological studies.
journal_name
Dev Psychobioljournal_title
Developmental psychobiologyauthors
Bar-Haim Y,Marshall PJ,Fox NAdoi
10.1002/1098-2302(200007)37:1<44::aid-dev6>3.0.co;subject
Has Abstractpub_date
2000-07-01 00:00:00pages
44-56issue
1eissn
0012-1630issn
1098-2302pii
10.1002/1098-2302(200007)37:1<44::AID-DEV6>3.0.CO;journal_volume
37pub_type
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