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Computer-based Multitaper Spectrogram Program for Electroencephalographic Data
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Calculation and plotting of retinal nerve fiber paths based on Jansonius et al. 2009/2012 with an R program.

M Bach1,2, M B Hoffmann3,4

  • 1University Eye Center, Medical Center - University of Freiburg, Germany.

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|June 14, 2018
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Summary

This study provides R code implementing Jansonius' formulas for modeling human retinal nerve fiber paths. This tool aids in analyzing retinal conduction speed and understanding electroretinogram components.

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Area of Science:

  • Ophthalmology
  • Computational Biology
  • Neuroscience

Background:

  • Retinal conduction speed analysis requires individual retinal nerve fiber length data.
  • Previous mathematical models by Jansonius et al. described human retinal nerve fiber path morphology.

Purpose of the Study:

  • To provide a working R implementation of Jansonius et al.'s formulas for modeling retinal nerve fiber paths.
  • To offer a tool for quantitative modeling of retinal nerve fibers and derived measures, correcting for known errata.

Main Methods:

  • Developed an R package implementing Jansonius et al.'s mathematical formulas for retinal nerve fiber path morphology.
  • Included a function ('phi') for quantitative modeling and a demonstration graph plotting sample nerve fibers.
  • Ensured the R code runs in base R without requiring additional packages.

Main Results:

  • A functional R implementation of Jansonius et al.'s retinal nerve fiber modeling formulas is now available.
  • The provided code allows for quantitative modeling of retinal nerve fiber paths and associated measures.
  • A demonstration graph visualizes sample retinal nerve fibers.

Conclusions:

  • The released R code offers a practical tool for researchers studying retinal nerve fiber morphology and function.
  • This implementation facilitates further analysis of retinal conduction speed and electroretinogram components.
  • The open-source code promotes accessibility and reproducibility in ophthalmic research.