Data augmentation for generating synthetic electrogastrogram time series

Nadica Miljković (Author), Nikola Milenić (Author), Nenad B. Popović (Author), Jaka Sodnik (Author)

Abstract

To address an emerging need for large number of diverse datasets for rigor evaluation of signal processing techniques, we developed and evaluated a new method for generating synthetic electrogastrogram time series. We used electrogastrography (EGG) data from an open database to set model parameters and statistical tests to evaluate synthesized data. Additionally, we illustrated method customization for generating artifcial EGG time series alterations caused by the simulator sickness. Proposed data augmentation method generates synthetic EGG data with specifed duration, sampling frequency, recording state (postprandial or fasting state), overall noise and breathing artifact injection, and pauses in the gastric rhythm (arrhythmia occurrence) with statistically signifcant diference between postprandial and fasting states in>70% cases while not accounting for individual diferences. Features obtained from the synthetic EGG signal resembling simulator sickness occurrence displayed expected trends. The code for generation of synthetic EGG time series is not only freely available and can be further customized to assess signal processing algorithms but also may be used to increase data diversity for training artifcial intelligence (AI) algorithms. The proposed approach is customized for EGG data synthesis but can be easily utilized for other biosignals with similar nature such as electroencephalogram.

Keywords

želodčni ritem;elektrogastrografija;gibalna slabost;gostota močnostnega spektra;sintetični podatki;gastric rhythm;electrogastrography;motion sickness;power spectral density;synthetic data;

Data

Language:	English
Year of publishing:	2024
Typology:	1.01 - Original Scientific Article
Organization:	UL FE - Faculty of Electrical Engineering
UDC:	004:621.3:616.3
COBISS:	194766851
ISSN:	1741-0444
Views:	54
Downloads:	4
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	želodčni ritem;elektrogastrografija;gibalna slabost;gostota močnostnega spektra;sintetični podatki;
Type (COBISS):	Article
Pages:	str. 2879-2891
Volume:	ǂVol. ǂ62
Issue:	ǂiss. ǂ9
Chronology:	Sep. 2024
DOI:	10.1007/s11517-024-03112-0
ID:	24750114