Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform

Fabiola M. Villalobos-Castaldi, José Ruiz-Pinales, Nicolás C. Kemper-Valverde, Mercedes Flores-Flores, Laura G. Ramírez-Sánchez, Metztli G. Ortiz-Hernández

2016

Abstract

This paper proposes a new application of the Hilbert-Huang transform (HHT). Pupillogram recordings were analyzed through the non-traditional HHT to investigate patterns in the time-frequency parameters of Spontaneous Pupillary Oscillation (SPO) signals. The traditional Fourier transform is only useful for linear stationary signals analysis, but the HHT was designed for the analysis of non-linear and non-stationary signals. However, the HHT is a more suitable tool to study SPO signals which are fundamentally non-stationary. The intrinsic properties of the Spontaneous Pupillary Oscillation signals were highlighted by the HHT scheme and the results showed that SPO waves present local and intermittent variations through the time span. The numerical parameters demonstrated that it is a wide inter-subject variation in the intrinsic time-frequency parameters contribution from each yielding mode to the total signal content.

Paper Citation

in Harvard Style

Villalobos-Castaldi F., Ruiz-Pinales J., Kemper-Valverde N., Flores-Flores M., Ramírez-Sánchez L. and Ortiz-Hernández M. (2016). Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform . In Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS, (BIOSTEC 2016) ISBN 978-989-758-170-0, pages 67-77. DOI: 10.5220/0005697400670077

in Bibtex Style

@conference{biosignals16,
author={Fabiola M. Villalobos-Castaldi and José Ruiz-Pinales and Nicolás C. Kemper-Valverde and Mercedes Flores-Flores and Laura G. Ramírez-Sánchez and Metztli G. Ortiz-Hernández},
title={Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform},
booktitle={Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS, (BIOSTEC 2016)},
year={2016},
pages={67-77},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005697400670077},
isbn={978-989-758-170-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 4: BIOSIGNALS, (BIOSTEC 2016)
TI - Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform
SN - 978-989-758-170-0
AU - Villalobos-Castaldi F.
AU - Ruiz-Pinales J.
AU - Kemper-Valverde N.
AU - Flores-Flores M.
AU - Ramírez-Sánchez L.
AU - Ortiz-Hernández M.
PY - 2016
SP - 67
EP - 77
DO - 10.5220/0005697400670077