Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform

@inproceedings{VillalobosCastaldi2016SpontaneousPO,
  title={Spontaneous Pupillary Oscillation Signal Analysis Applying Hilbert Huang Transform},
  author={Fabiola M. Villalobos-Castaldi and Jos{\'e} Ruiz-Pinales and Nicol{\'a}s C. Kemper-Valverde and Mercedes Flores-Flores and Laura G. Ram{\'i}rez-S{\'a}nchez and Metztli G. Ortiz-Hern{\'a}ndez},
  booktitle={BIOSIGNALS},
  year={2016}
}
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… 

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References

SHOWING 1-10 OF 42 REFERENCES
Time-frequency analysis of spontaneous fluctuation of the pupil size of the human eye
The aim of this work has been to develop a new method of variability description for the spontaneous pupillary fluctuation (SPF) signal, based on the time-frequency analysis. In the work we have
Cardiovascular autonomic rhythms in spontaneous pupil fluctuations
TLDR
It is concluded that cardiovascular autonomic rhythms can be detected in spontaneous pupil diameter fluctuations.
Spontaneous fluctuations of human pupil reflect central autonomic rhythms.
TLDR
The effect of tilting on SPDF spectra and the physiological background of the pupil control are consistent with the hypothesis that pupil fluctuations reflect a generalized increase of the sympathetic tone.
Baroceptor-sensitive fluctuations of human pupil diameter
TLDR
It is shown that baroreceptor stimulation induces pupil fluctuations locked to both stimulation frequencies, suggesting blood pressure fluctuations propagate to the pupil via carotin baroreceptors afferent pathways, however a central contribution cannot be excluded.
Applications of Hilbert–Huang transform to non‐stationary financial time series analysis
A new method, the Hilbert–Huang Transform (HHT), developed initially for natural and engineering sciences has now been applied to financial data. The HHT method is specially developed for analysing
The Hilbert-Huang transform: Theory, applications, development
TLDR
The background theory of HHT will be described and compared with other spectral analysis tools, and a new algorithm is presented which expands HHT ability to analyze discontinuous data.
Hilbert-Huang transform based physiological signals analysis for emotion recognition
  • Cong Zong, M. Chetouani
  • Computer Science
    2009 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
  • 2009
TLDR
The classification scores show that HHT based methods outperform traditional statistical techniques and provide a promising framework for both analysis and recognition of physiological signals in emotion recognition.
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