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Scientific article
Open access
English

Voxeloc : A time-saving graphical user interface for localizing and visualizing stereo-EEG electrodes

Published inJournal of neuroscience methods, vol. 407, 110154
Publication date2024-04-30
First online date2024-04-30
Abstract

Background: Thanks to its unrivalled spatial and temporal resolutions and signal-to-noise ratio, intracranial EEG (iEEG) is becoming a valuable tool in neuroscience research. To attribute functional properties to cortical tissue, it is paramount to be able to determine precisely the localization of each electrode with respect to a patient's brain anatomy. Several software packages or pipelines offer the possibility to localize manually or semi-automatically iEEG electrodes. However, their reliability and ease of use may leave to be desired.

New method: Voxeloc (voxel electrode locator) is a Matlab-based graphical user interface to localize and visualize stereo-EEG electrodes. Voxeloc adopts a semi-automated approach to determine the coordinates of each electrode contact, the user only needing to indicate the deep-most contact of each electrode shaft and another point more proximally.

Results: With a deliberately streamlined functionality and intuitive graphical user interface, the main advantages of Voxeloc are ease of use and inter-user reliability. Additionally, oblique slices along the shaft of each electrode can be generated to facilitate the precise localization of each contact. Voxeloc is open-source software and is compatible with the open iEEG-BIDS (Brain Imaging Data Structure) format.

Comparison with existing methods: Localizing full patients' iEEG implants was faster using Voxeloc than two comparable software packages, and the inter-user agreement was better.

Conclusions: Voxeloc offers an easy-to-use and reliable tool to localize and visualize stereo-EEG electrodes. This will contribute to democratizing neuroscience research using iEEG.

eng
Keywords
  • Electrode localization
  • Electrode visualization
  • Epilepsy surgery
  • FreeSurfer
  • Graphical user interface
  • Intracranial EEG
  • Matlab
  • Stereo-EEG
Citation (ISO format)
MONNEY, Jonathan et al. Voxeloc : A time-saving graphical user interface for localizing and visualizing stereo-EEG electrodes. In: Journal of neuroscience methods, 2024, vol. 407, p. 110154. doi: 10.1016/j.jneumeth.2024.110154
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ISSN of the journal0165-0270
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Creation05/21/2024 2:09:18 PM
First validation05/22/2024 2:48:25 PM
Update time05/22/2024 2:48:25 PM
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