Relating pain intensity of newborns to onset of nonlinear phenomena in cry recordings
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چکیده
The cries of several full term newborns, recorded during blood sampling, were analyzed. Spectrograms showed the appearance of irregular patterns related to the pain assessed using the method of the DAN scale [3]. In particular, the appearance of Noise concentration Patterns (NP) in spectrograms was related to the increase of the pain suffered by the newborns. In this scenario, pain constitutes a bifurcation parameter for the vocal folds dynamic, inducing a Ruelle-TakensNewhouse chaotic transition. PACS numbers: 43.64.+r; 05.45.-a; 43.80.+p aElectronic address: [email protected]
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تاریخ انتشار 2008