We present interesting experimental results obtained from an observational study of the cries of several newborns aged between 24 and 48 hours, recorded during the phase of blood sampling. Analysis performed put in evidence that the emitted vocalization becomes more irregular and aperiodic with the increase of the pain suffered by the newborn. We think that this phenomenon can be explained by taking into account some behaviors observed in the model by Ishizaka and Flanagan of the vocal folds [1]. Chaotic behaviors have been found in the cries of healthy infants as well as infants with several perinatal complications [2]. We show that these phenomena also appear in healthy infants and are related to the newborn's pain intensity. Under the point of view of the dissipative systems, pain acts as a bifurcation parameter for the motion of the vocal folds. These hypothesis are supported by the recurrence plot [3, 4] analysis performed on the cries and, in particular the shape and the patterns observed in the plots are typical of chaotic transitions observed in dissipative systems.

Tiezzi, E., Pulselli, F.M., Facchini, A. (2004). Determination of pain intensity in newborns by Time Series Analysis. In Design & Nature II - Comparing Design in Nature with Science and Engineering (pp. 443-450). SOUTHAMPTON : WIT Press.

Determination of pain intensity in newborns by Time Series Analysis

TIEZZI, E.;PULSELLI, F. M.;
2004-01-01

Abstract

We present interesting experimental results obtained from an observational study of the cries of several newborns aged between 24 and 48 hours, recorded during the phase of blood sampling. Analysis performed put in evidence that the emitted vocalization becomes more irregular and aperiodic with the increase of the pain suffered by the newborn. We think that this phenomenon can be explained by taking into account some behaviors observed in the model by Ishizaka and Flanagan of the vocal folds [1]. Chaotic behaviors have been found in the cries of healthy infants as well as infants with several perinatal complications [2]. We show that these phenomena also appear in healthy infants and are related to the newborn's pain intensity. Under the point of view of the dissipative systems, pain acts as a bifurcation parameter for the motion of the vocal folds. These hypothesis are supported by the recurrence plot [3, 4] analysis performed on the cries and, in particular the shape and the patterns observed in the plots are typical of chaotic transitions observed in dissipative systems.
2004
1853127213
Tiezzi, E., Pulselli, F.M., Facchini, A. (2004). Determination of pain intensity in newborns by Time Series Analysis. In Design & Nature II - Comparing Design in Nature with Science and Engineering (pp. 443-450). SOUTHAMPTON : WIT Press.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/15646
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