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A new approach to predict the performance of objective response detectors from Monte Carlo simulations

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Abstract

Purpose

Objective response detection (ORD) techniques assess if evoked potentials are embedded in the background electroencephalogram (EEG). If each technique gives its result, then it is necessary to check which test performs it better. Therefore, a methodology derived from Monte Carlo (MC) simulation was proposed to compare five ORD techniques.

Methods

It was based on estimating the probability of detection (PD) of the tests for the different number of data segments (windows) and with a signal-to-noise ratio (SNR) ranging from − 40 to 0 dB. Moreover, an EEG database of subjects under auditory stimulation was used in order to validate the proposed methodology.

Results

The simulation results showed that the detectors that used the neighboring frequency-band to the interest frequency, as the local spectral F test and Hotelling’s T2, have a better PD when the number of windows used is less than about 20. Conversely, when they are compared in cases with a greater number of windows, magnitude squared coherence, and modified Rayleigh test tend to have a higher PD value. These predictions were validated with the EEG signals.

Conclusion

Therefore, this work predicted the performance of detectors only by means of MC simulation, as a function of the number of windows and tuned to an SNR range consistent with the EEG.

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Acknowledgements

The authors would like to thank Tiago Zanotelli, who contributed with clarifications regarding the computing process.

Funding

This research received financial support from the Brazilian agencies CNPq (grant 312592/2020–5) and FAPERJ (grants E-26/202.587/2019 and SEI-260003/001142/2020).

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Authors and Affiliations

Authors

Contributions

Marcos Aurelio Freire Ferraz Passos, Felipe Antunes, and Leonardo Bonato Felix have contributed to the study’s conception and design. Antonio Mauricio Ferreira Leite Miranda de Sá has evaluated this work concerning mathematical and statistical analysis. All the authors have read and approved the final manuscript.

Corresponding author

Correspondence to Marcos Aurelio Freire Ferraz Passos.

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Ethics approval

The Local Ethics Committees IFF-FIOCRUZ/MS and CEP/UFV (1.616.098) approved this research.

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All volunteers gave written informed consent to participate.

Conflict of interest

The authors declare no competing interests.

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Passos, M.A.F.F., de Sá, A.M.F.L.M., Antunes, F. et al. A new approach to predict the performance of objective response detectors from Monte Carlo simulations. Res. Biomed. Eng. 38, 1113–1119 (2022). https://doi.org/10.1007/s42600-022-00243-x

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  • DOI: https://doi.org/10.1007/s42600-022-00243-x

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