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Related Experiment Videos

Versatile digital data logger: storage of gastrointestinal motility data.

T G Barnett1, T H Koeze, D R Meeks

  • 1Hill Centre, London Hospital Medical College, UK.

Medical & Biological Engineering & Computing
|March 1, 1990
PubMed
Summary

This study introduces an affordable, pocket-sized four-channel data logger for recording gastrointestinal potentials. The device enables ambulatory recordings up to 27 hours, with data analyzed on a PC.

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Area of Science:

  • Biomedical Engineering
  • Gastroenterology
  • Physiological Monitoring

Background:

  • Long-term recording of physiological signals, particularly gastrointestinal potentials, often requires specialized and cumbersome equipment.
  • Ambulatory monitoring is crucial for understanding physiological processes in naturalistic settings.
  • Existing methods may lack portability, affordability, or the capacity for extended recording periods.

Purpose of the Study:

  • To describe the development and functionality of an inexpensive, portable four-channel data logger for gastrointestinal potentials.
  • To assess the suitability of the data logger for ambulatory recordings in both human and canine subjects.
  • To demonstrate the data processing capabilities for analysis and presentation.

Main Methods:

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  • Development of a compact, lightweight four-channel data logger with 512 KB memory and 1.25 Hz sampling rate per channel.
  • Utilized a separate replay unit for data transfer to a chart recorder or PC AT interface.
  • Employed a Microsoft C v5.0 program for data visualization (scrolling, expansion) and analysis on a computer.

    • Main Results:

    • The data logger successfully recorded gastrointestinal potentials for up to 27 hours, allowing for free ambulation.
    • Data could be displayed in real-time or post-recording, with options for chart printing or ASCII file export for statistical analysis.
    • Comparison of analogue and digitally recorded data demonstrated the system's accuracy.

    Conclusions:

    • The developed data logger is a cost-effective and portable solution for long-term gastrointestinal potential recordings.
    • Its design facilitates ambulatory monitoring under challenging conditions.
    • The system offers versatile data handling for analysis and presentation, suggesting broad applicability in physiological research.