high-gamma-dataset

High Gamma Dataset

This is the documnentation for the High Gamma Dataset used in "Deep learning with convolutional neural networks for EEG decoding and visualization" (https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.23730). See the paper and supporting information for a general description.

Download

Download the files from here: https://www.dropbox.com/sh/vgxed0kx0b31aiv/AAAS2E7qXpn0vPjqjMLVW4ZOa?dl=0

Loading this dataset

The braindecode toolbox at https://github.com/robintibor/braindecode provides code to load this dataset in python. You can run the following code to get an MNE RawArray:

from braindecode.datasets.bbci import  BBCIDataset
cnt = BBCIDataset(filename='./test/1.mat', load_sensor_names=None).load()

For using the dataset for decoding, see the next section.

Reproduction of our results

The example.py code in this repository shows how to reproduce the decoding results from the paper above and can also be used as an example code for decoding. Please change the data_folder in the code to the folder where you downloaded the dataset to, see the code at the bottom of the file.

Data format

The data are hdf5-files, the structure is based on the structure from the Berlin Brain Computer Interface Toolbox at https://github.com/bbci/bbci_public. Most fields have been removed, only some necessary fields are retained. We recommend to use our loading code as described above.

Details of recording

The recodings were referenced to Cz, however in our recording setup, some residual signal remains on Cz. Note that for subject 14, about half of the sensors lost meaningful signal in the test set. It is still possible to get far-above chance accuracies even when not accounting for this in any way when training on all sensors of the training set.

Citing

If you use this dataset in a scientific publication, please cite the above-mentioned HBM-paper as:

  @article {HBM:HBM23730,
  author = {Schirrmeister, Robin Tibor and Springenberg, Jost Tobias and Fiederer,
    Lukas Dominique Josef and Glasstetter, Martin and Eggensperger, Katharina and Tangermann, Michael and
    Hutter, Frank and Burgard, Wolfram and Ball, Tonio},
  title = {Deep learning with convolutional neural networks for EEG decoding and visualization},
  journal = {Human Brain Mapping},
  issn = {1097-0193},
  url = {http://dx.doi.org/10.1002/hbm.23730},
  doi = {10.1002/hbm.23730},
  month = {aug},
  year = {2017},
  keywords = {electroencephalography, EEG analysis, machine learning, end-to-end learning, brain–machine interface, 
    brain–computer interface, model interpretability, brain mapping},
  }