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nm000123 NEMAR-native dataset

Kalunga2016 – SSVEP Exo dataset

This dataset comprises steady-state visually evoked potential (SSVEP) recordings from 12 healthy subjects performing a brain-computer interface task using flickering LED stimuli at three frequencies (13, 17, and 21 Hz). Recorded using 8-channel EEG at 256 Hz with a g.tec MobiLab amplifier, the data was collected during subjects seated in an electric wheelchair as part of an assistive robotics application. The dataset includes 32 trials per subject with four classes (three stimulus frequencies plus a rest condition) and is designed for evaluating Riemannian geometry-based classification methods in online SSVEP-BCI systems.

EEG

Compute on this dataset

Two routes today, with a third (in-browser one-click submission) landing soon.

  1. NeuroScience Gateway (NSG) portal.

    NSG runs EEGLAB / Brainstorm / MNE pipelines on supercomputing time donated by SDSC. Create an account, point a job at this dataset's S3 prefix (s3://nemar/nm000123), and submit.
    nsgportal.org →

  2. Local processing with nemar-cli.

    Pull the dataset to your machine and run any toolbox locally. Honors the published version pinning.

    npm install -g nemar-cli
    nemar dataset clone nm000123
    cd nm000123 && nemar dataset get
  3. Just the files.

    rclone, aria2c, or any HTTPS client works against data.nemar.org/nm000123/ — the manifest carries presigned S3 URLs.

Direct compute access is coming soon. One-click NSG submission from this page is scoped for a follow-up phase. Tracked on nemarOrg/website#6.

![DOI](https://doi.org/10.82901/nemar.nm000123)

SSVEP Exo dataset

SSVEP Exo dataset.

Dataset Overview

  • Code: Kalunga2016
  • Paradigm: ssvep
  • DOI: 10.1016/j.neucom.2016.01.007
  • Subjects: 12
  • Sessions per subject: 1
  • Events: 13=2, 17=4, 21=3, rest=1
  • Trial interval: [2, 4] s
  • File format: fif

Acquisition

  • Sampling rate: 256.0 Hz
  • Number of channels: 8
  • Channel types: eeg=8
  • Channel names: Oz, O1, O2, POz, PO3, PO4, PO7, PO8
  • Montage: standard_1005
  • Hardware: g.tec MobiLab
  • Reference: right mastoid
  • Sensor type: EEG
  • Line frequency: 50.0 Hz

Participants

  • Number of subjects: 12
  • Health status: healthy
  • Species: human

Experimental Protocol

  • Paradigm: ssvep
  • Number of classes: 4
  • Class labels: 13, 17, 21, rest
  • Trial duration: 6.0 s
  • Study design: SSVEP
  • Feedback type: none
  • Stimulus type: flickering
  • Stimulus modalities: visual
  • Primary modality: visual
  • Synchronicity: synchronous
  • Mode: offline
  • Stimulus presentation: device=LED stimuli, frequencies=13 Hz, 17 Hz, 21 Hz, note=No phase synchronization required

HED Event Annotations

Schema: HED 8.4.0 | Browse: https://www.hedtags.org/hed-schema-browser

  13
    ├─ Sensory-event
    ├─ Experimental-stimulus
    ├─ Visual-presentation
    └─ Label/13

  17
    ├─ Sensory-event
    ├─ Experimental-stimulus
    ├─ Visual-presentation
    └─ Label/17

  21
    ├─ Sensory-event
    ├─ Experimental-stimulus
    ├─ Visual-presentation
    └─ Label/21

  rest
    ├─ Experiment-structure
    └─ Rest

Paradigm-Specific Parameters

  • Detected paradigm: ssvep
  • Stimulus frequencies: [13.0, 17.0, 21.0] Hz
  • Number of targets: 3

Data Structure

  • Trials: 32 trials per session (8 per visual stimulus, 8 for resting class)
  • Trials context: per session

Preprocessing

  • Preprocessing applied: False

Signal Processing

  • Classifiers: MDRM, CCA
  • Feature extraction: Covariance/Riemannian

Cross-Validation

  • Method: bootstrap
  • Evaluation type: crosssubject, crosssession

BCI Application

  • Applications: assistive_robotics
  • Environment: laboratory
  • Online feedback: False

Tags

  • Pathology: Healthy
  • Modality: Visual
  • Type: Perception

Documentation

  • Description: Online SSVEP-based BCI using Riemannian geometry for assistive robotics with shared control scheme
  • DOI: 10.1016/j.neucom.2016.01.007
  • License: CC-BY-4.0
  • Investigators: Emmanuel K. Kalunga, Sylvain Chevallier, Quentin Barthélemy, Karim Djouani, Eric Monacelli, Yskandar Hamam
  • Senior author: Sylvain Chevallier
  • Institution: Universite de Versailles Saint-Quentin
  • Department: Laboratoire d'Ingénierie des Systèmes de Versailles
  • Address: 78140 Velizy, France
  • Country: FR
  • Repository: Zenodo
  • Data URL: https://zenodo.org/record/2392979
  • Publication year: 2016
  • Keywords: Riemannian geometry, Online, Asynchronous, Brain-Computer Interfaces, Steady State Visually Evoked Potentials

References

Emmanuel K. Kalunga, Sylvain Chevallier, Quentin Barthelemy. "Online SSVEP-based BCI using Riemannian Geometry". Neurocomputing, 2016. arXiv report: https://arxiv.org/abs/1501.03227 Appelhoff, S., Sanderson, M., Brooks, T., Vliet, M., Quentin, R., Holdgraf, C., Chaumon, M., Mikulan, E., Tavabi, K., Hochenberger, R., Welke, D., Brunner, C., Rockhill, A., Larson, E., Gramfort, A. and Jas, M. (2019). MNE-BIDS: Organizing electrophysiological data into the BIDS format and facilitating their analysis. Journal of Open Source Software 4: (1896). https://doi.org/10.21105/joss.01896

Pernet, C. R., Appelhoff, S., Gorgolewski, K. J., Flandin, G., Phillips, C., Delorme, A., Oostenveld, R. (2019). EEG-BIDS, an extension to the brain imaging data structure for electroencephalography. Scientific Data, 6, 103. https://doi.org/10.1038/s41597-019-0104-8


Generated by MOABB 1.4.3 (Mother of All BCI Benchmarks) https://github.com/NeuroTechX/moabb

Files

19 top-level entries · 78.0 MB total