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\begin{document}

\title{Technical Validation of the Zeto Wireless, Dry Electrode EEG System}



\author[1]{Zoltan Nadasdy}%
\author[1]{A. S. Fogarty}%
\author[1]{R. S. Fisher}%
\author[1]{C. T. Primiani}%
\author[1]{K. Graber}%
\affil[1]{Affiliation not available}%


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  \date{May 17, 2024}


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\begin{abstract}
Objective: Clinical adoption of innovative EEG technology is contingent
on the non-inferiority of the new devices relative to conventional ones.
We present the four key results from testing the signal quality of
Zeto's WR19 EEG system against a conventional EEG system conducted on
patients in a clinical setting. Methods: We performed 30-minute
simultaneous recordings using the Zeto WR19 (zEEG) and a conventional
clinical EEG system (cEEG) in a cohort of 15 patients. We compared the
signal quality between the two EEG systems by computing time domain
statistics, spectral density, and signal-to-noise ratio. Results: All
the statistical comparisons resulted in signal quality non-inferior
relative to cEEG. (i) Time domain statistics, including the Hjorth
parameters, showed equivalence between the two systems, except for a
significant reduction of sensitivity to electric noise in zEEG relative
to cEEG. (ii) The point-by-point waveform correlation between the two
systems was acceptable (r\textgreater{}0.6; P\textless{}0.001). (iii)
Each of the 15 datasets showed a high spectral correlation
(r\textgreater{}0.99; P\textless{}0.001) and overlapping spectral
density across all electrode positions, indicating no systematic signal
distortion. (iv) The mean signal-to-noise ratio (SNR) of the zEEG system
exceeded that of the cEEG by 4.82 dB, equivalent to 16\% improvement.
Conclusion: In terms of signal quality, the zEEG system is non-inferior
to conventional clinical EEG systems with respect to all relevant
technical parameters that determine EEG readability and
interpretability. Significance: Zeto's WR19 wireless dry electrode
system has signal quality in the clinical EEG space equivalent to
traditional cEEG recordings.%
\end{abstract}%



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