Abstract
The present study evaluated the possibility of collecting cardiac vagal tone data using a photoplethysmograph, and its stability and continuity in a longitudinal sample of early-school aged children. A method for the optical (i.e., blood volume pulse) estimation of heart rate was established in a pilot study. Then the longitudinal stability and continuity in photoplethysmograph-derived vagal tone was assessed in 114 children (56 girls) at three sessions between 5 and 7 years of age. Results indicate that this method possesses substantial measurement reliability and individual stability, as children report low intra-individual variation over time. Children also report a mean decrease in vagal tone from 5 to 7 years of age, consistent with increased attentional capacity. Overall, this suggests blood volume pulse estimation of vagal tone is both accurate and appropriate for naturalistic developmental research.
| Original language | English |
|---|---|
| Pages (from-to) | 23-35 |
| Number of pages | 13 |
| Journal | Developmental Psychobiology |
| Volume | 56 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2014 |
| Externally published | Yes |
Keywords
- children
- heart rate variability
- RSA
- vagal tone
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