ArticleNeurogastroenterology and motility2013
Comparison of filtering methods for extracellular gastric slow wave recordings.
Article in Neurogastroenterology and motility, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed.
- Patterns of Abnormal Gastric Pacemaking After Sleeve Gastrectomy Defined by Laparoscopic High-Resolution Electrical Mapping.Obesity surgery · 2017Trial
- Anaesthesia by intravenous propofol reduces the incidence of intra-operative gastric electrical slow-wave dysrhythmias compared to isoflurane.Scientific reports · 2023Article
- Localized bioelectrical conduction block from radiofrequency gastric ablation persists after healing: safety and feasibility in a recovery model.American journal of physiology. Gastrointestinal and liver physiology · 2022Article
- High-resolution in vivo monophasic gastric slow waves to quantify activation and recovery profiles.Neurogastroenterology and motility · 2022Article
- Targeted ablation of gastric pacemaker sites to modulate patterns of bioelectrical slow wave activation and propagation in an anesthetized pig model.American journal of physiology. Gastrointestinal and liver physiology · 2022Article
- Robustness of ventilation systems in the control of walking-induced indoor fluctuations: Method development and case study.Building simulation · 2022Article
- Intraoperative serosal extracellular mapping of the human distal colon: a feasibility study.Biomedical engineering online · 2021Article
- The influence of interstitial cells of Cajal loss and aging on slow wave conduction velocity in the human stomach.Physiological reports · 2021Article
- High-resolution Mapping of Hyperglycemia-induced Gastric Slow Wave Dysrhythmias.Journal of neurogastroenterology and motility · 2019Article
- EGG DWPack: System for Multi-Channel Electrogastrographic Signals Recording and Analysis.Journal of medical systems · 2018Article
- Correct techniques for extracellular recordings of electrical activity in gastrointestinal muscle.Nature reviews. Gastroenterology & hepatology · 2017Article
- Power comes from technical fidelity, not from ease of use.Nature reviews. Gastroenterology & hepatology · 2017Article
- High-resolution electrical mapping of porcine gastric slow-wave propagation from the mucosal surface.Neurogastroenterology and motility · 2017Article
- A novel retractable laparoscopic device for mapping gastrointestinal slow wave propagation patterns.Surgical endoscopy · 2017Article
- Progress in Mathematical Modeling of Gastrointestinal Slow Wave Abnormalities.Frontiers in physiology · 2017Review
- Time-Delay Mapping of High-Resolution Gastric Slow-Wave Activity.IEEE transactions on bio-medical engineering · 2017Article
- Acute Slow Wave Responses to High-Frequency Gastric Electrical Stimulation in Patients With Gastroparesis Defined by High-Resolution Mapping.Neuromodulation : journal of the International Neuromodulation Society · 2016Article
- Problems with extracellular recording of electrical activity in gastrointestinal muscle.Nature reviews. Gastroenterology & hepatology · 2016Review
- Iterative Covariance-Based Removal of Time-Synchronous Artifacts: Application to Gastrointestinal Electrical Recordings.IEEE transactions on bio-medical engineering · 2016Article
- Functional physiology of the human terminal antrum defined by high-resolution electrical mapping and computational modeling.American journal of physiology. Gastrointestinal and liver physiology · 2016Article
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Abstract
backgroundExtracellular recordings are used to define gastric slow wave propagation. Signal filtering is a key step in the analysis and interpretation of extracellular slow wave data; however, there is controversy and uncertainty regarding the appropriate filtering settings. This study investigated the effect of various standard filters on the morphology and measurement of extracellular gastric slow waves.
methodsExperimental extracellular gastric slow waves were recorded from the serosal surface of the stomach from pigs and humans. Four digital filters: finite impulse response filter (0.05-1 Hz); Savitzky-Golay filter (0-1.98 Hz); Bessel filter (2-100 Hz); and Butterworth filter (5-100 Hz); were applied on extracellular gastric slow wave signals to compare the changes temporally (morphology of the signal) and spectrally (signals in the frequency domain). KEY
resultsThe extracellular slow wave activity is represented in the frequency domain by a dominant frequency and its associated harmonics in diminishing power. Optimal filters apply cutoff frequencies consistent with the dominant slow wave frequency (3-5 cpm) and main harmonics (up to ≈ 2 Hz). Applying filters with cutoff frequencies above or below the dominant and harmonic frequencies was found to distort or eliminate slow wave signal content. CONCLUSIONS & INFERENCES: Investigators must be cognizant of these optimal filtering practices when detecting, analyzing, and interpreting extracellular slow wave recordings. The use of frequency domain analysis is important for identifying the dominant and harmonics of the signal of interest. Capturing the dominant frequency and major harmonics of slow wave is crucial for accurate representation of slow wave activity in the time domain. Standardized filter settings should be determined.
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