Free & Open Access

Plan sEEG implantations in your browser

A simple tool based on the Talairach atlas

No PHI uploaded — runs entirely in your browser
Instant access — no install or login needed
Open access — CC BY 4.0 licensed

About sEEGplan

A planning tool for neurosurgeons, epileptologists, and neurophysiologists working with stereoelectroencephalography.

sEEGplan provides an interactive Talairach atlas interface for placing and evaluating electrode trajectories across both hemispheres. Drag electrode labels onto the brain template, annotate regions of interest with freehand ROI drawing, and export coordinates and PDF surgical plans — all without leaving your browser.

Plans are only saved to your computer as portable JSON files that can be shared between team members or loaded across sessions. No data ever leaves your device, nothing you enter is sent to our server.

Features

  • Interactive Talairach atlas with lead labeling system
  • Includes options for lead orientation (orthogonal/oblique), electrode projections, and trans-interhemispheric leads
  • Includes several templates to start planning based on common epilepsy hypotheses
  • Freehand ROI drawing for region annotation
  • Full-screen presentation mode for case conferences
  • Print or download PDFs of the plans and .csv files with lead lists
sEEGplan single-hemisphere planning view with placed sEEG leads

Main planning interface

sEEGplan bilateral hemisphere planning view with leads on both sides

Presentation mode

References & Documentation

Atlas

Talairach Atlas Reference

The Talairach and Tournoux proportional grid system underpins all coordinate outputs in sEEGplan.

Talairach.org →
Background

sEEG Methodology

Overview of stereoelectroencephalography indications, technique, and planning principles for electrode implantation.

Search PubMed →
Key Reference

A semiology-driven framework for explorations of temporal lobe epilepsy

Mallela et al., Epilepsia (2025). The hypothesis-based implantation templates bundled in sEEGplan are derived from this paper.

View on Wiley →

Citing sEEGplan

If you use sEEGplan in your clinical workflow or research, please cite it as:

sEEGplan — Talairach Atlas Lead Planning Tool. Available at: https://seegplan.org. Licensed under CC BY 4.0.

Contact

Get in Touch

Questions, feedback, or collaboration inquiries — reach out any time.

Email nate@seegplan.org

Developed by Nathan Pertsch and Arka Mallela at Rush University, Chicago, IL.