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Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample

Electrogastrography (EGG) is the noninvasive electrophysiological technique used to record gastric electrical activity by means of cutaneous electrodes placed on the abdomen. EGG has been so far mostly used in clinical studies in gastroenterology, but it represents an attractive method to study brai...

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Autores principales: Wolpert, Nicolai, Rebollo, Ignacio, Tallon‐Baudry, Catherine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7507207/
https://www.ncbi.nlm.nih.gov/pubmed/32449806
http://dx.doi.org/10.1111/psyp.13599
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author Wolpert, Nicolai
Rebollo, Ignacio
Tallon‐Baudry, Catherine
author_facet Wolpert, Nicolai
Rebollo, Ignacio
Tallon‐Baudry, Catherine
author_sort Wolpert, Nicolai
collection PubMed
description Electrogastrography (EGG) is the noninvasive electrophysiological technique used to record gastric electrical activity by means of cutaneous electrodes placed on the abdomen. EGG has been so far mostly used in clinical studies in gastroenterology, but it represents an attractive method to study brain‐viscera interactions in psychophysiology. Compared to the literature on electrocardiography for instance, where practical recommendations and normative data are abundant, the literature on EGG in humans remains scarce. The aim of this article is threefold. First, we review the existing literature on the physiological basis of the EGG, pathways of brain‐stomach interactions, and experimental findings in the cognitive neuroscience and psychophysiology literature. We then describe practical issues faced when recording the EGG in young healthy participants, from data acquisition to data analysis, and propose a semi‐automated analysis pipeline together with associated MATLAB code. The analysis pipeline aims at identifying a regular rhythm that can be safely attributed to the stomach, through multiple steps. Finally, we apply these recording and analysis procedures in a large sample (N = 117) of healthy young adult male and female participants in a moderate (<5 hr) to prolonged (>10 hr) fasting state to establish the normative distribution of several EGG parameters. Our results are overall congruent with the clinical gastroenterology literature, but suggest using an electrode coverage extending to lower abdominal locations than current clinical guidelines. Our results indicate a marginal difference in EGG peak frequency between male and female participants, and that the gastric rhythm becomes more irregular after prolonged fasting.
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spelling pubmed-75072072020-09-28 Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample Wolpert, Nicolai Rebollo, Ignacio Tallon‐Baudry, Catherine Psychophysiology Original Articles Electrogastrography (EGG) is the noninvasive electrophysiological technique used to record gastric electrical activity by means of cutaneous electrodes placed on the abdomen. EGG has been so far mostly used in clinical studies in gastroenterology, but it represents an attractive method to study brain‐viscera interactions in psychophysiology. Compared to the literature on electrocardiography for instance, where practical recommendations and normative data are abundant, the literature on EGG in humans remains scarce. The aim of this article is threefold. First, we review the existing literature on the physiological basis of the EGG, pathways of brain‐stomach interactions, and experimental findings in the cognitive neuroscience and psychophysiology literature. We then describe practical issues faced when recording the EGG in young healthy participants, from data acquisition to data analysis, and propose a semi‐automated analysis pipeline together with associated MATLAB code. The analysis pipeline aims at identifying a regular rhythm that can be safely attributed to the stomach, through multiple steps. Finally, we apply these recording and analysis procedures in a large sample (N = 117) of healthy young adult male and female participants in a moderate (<5 hr) to prolonged (>10 hr) fasting state to establish the normative distribution of several EGG parameters. Our results are overall congruent with the clinical gastroenterology literature, but suggest using an electrode coverage extending to lower abdominal locations than current clinical guidelines. Our results indicate a marginal difference in EGG peak frequency between male and female participants, and that the gastric rhythm becomes more irregular after prolonged fasting. John Wiley and Sons Inc. 2020-05-25 2020-09 /pmc/articles/PMC7507207/ /pubmed/32449806 http://dx.doi.org/10.1111/psyp.13599 Text en © 2020 Inserm. Psychophysiology published by Wiley Periodicals LLC on behalf of Society for Psychophysiological Research This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
spellingShingle Original Articles
Wolpert, Nicolai
Rebollo, Ignacio
Tallon‐Baudry, Catherine
Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title_full Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title_fullStr Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title_full_unstemmed Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title_short Electrogastrography for psychophysiological research: Practical considerations, analysis pipeline, and normative data in a large sample
title_sort electrogastrography for psychophysiological research: practical considerations, analysis pipeline, and normative data in a large sample
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7507207/
https://www.ncbi.nlm.nih.gov/pubmed/32449806
http://dx.doi.org/10.1111/psyp.13599
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