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PuPl: an open-source tool for processing pupillometry data.

Isaac Kinley1,2, Yarden Levy3,4

  • 1, 1280 Main St W, Hamilton, ON, L8S 4L8, USA. kinleyid@mcmaster.ca.

Behavior Research Methods
|December 7, 2021
PubMed
Summary

PuPl is a new Matlab library for processing pupillometry data, offering tools for blink correction, trial sorting, and data segmentation. This pupillometry pipeline simplifies analysis and enables reproducible research.

Keywords:
MatlabOctaveOpen-source softwarePupillometry

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Area of Science:

  • Cognitive Neuroscience
  • Psychology
  • Biomedical Engineering

Background:

  • Pupillometry is a valuable tool for measuring cognitive and emotional processes.
  • Existing software for pupillometry data analysis can be complex and lacks standardization.

Purpose of the Study:

  • To introduce PuPl, an Octave-compatible Matlab library designed for efficient and user-friendly pupillometry data processing.
  • To provide a flexible and extensible platform for analyzing pupillometry data, facilitating reproducible research.

Main Methods:

  • PuPl offers preprocessing tools including blink correction, data smoothing, and gaze correction.
  • The library supports trial definition, sorting, and data segmentation for event-related pupil dilation analysis.
  • PuPl includes flexible tabular export options for diverse statistical analyses and can generate Matlab scripts from GUI interactions.

Main Results:

  • PuPl successfully replicated published findings using publicly available pupillometry data.
  • The software's GUI and script generation capabilities streamline the creation of reusable data processing pipelines.
  • The library's extensible design allows for future contributions and adaptation to evolving pupillometry best practices.

Conclusions:

  • PuPl provides a robust, accessible, and extensible solution for pupillometry data analysis.
  • The software facilitates reproducible research by simplifying complex data processing and analysis steps.
  • PuPl is available for download, encouraging wider adoption and contribution within the pupillometry research community.