moabb.datasets.Cattan2019_VR#

class moabb.datasets.Cattan2019_VR(virtual_reality=True, screen_display=True, subjects=None, sessions=None, **kwargs)[source]#

Dataset of an EEG-based BCI experiment in Virtual Reality using P300.

PapersWithCode leaderboard: https://paperswithcode.com/dataset/cattan2019-vr-moabb-1

Dataset summary

#Subj

21

#Chan

16

#Trials / class

600 NT / 120 T

Trials length

1 s

Freq

512 Hz

#Sessions

2

Participants

  • Population: healthy

  • Age: 26.38 (range: 19-44) years

  • BCI experience: varied gaming experience: some played video games occasionally, some played First Person Shooters; varied VR experience from none to repetitive

Equipment

  • Amplifier: g.USBamp (g.tec, Schiedlberg, Austria)

  • Electrodes: wet electrodes

  • Montage: 10-10

  • Reference: right earlobe

Preprocessing

  • Data state: raw EEG with software tagging via USB (note: tagging introduces jitter and latency - mean 38ms in PC, 117ms in VR)

  • Notes: mean tagging latency: ~38 ms in PC, ~117 ms in VR due to different hardware/software setup; these latencies should be used to correct ERPs

Data Access

Experimental Protocol

  • Paradigm: p300

  • Feedback: visual

  • Stimulus: flashing white crosses in 6x6 matrix

Found an issue with this dataset?

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We describe the experimental procedures for a dataset that we have made publicly available at https://doi.org/10.5281/zenodo.2605204 in mat (Mathworks, Natick, USA) and csv formats [1]. This dataset contains electroencephalographic recordings on 21 subjects doing a visual P300 experiment on non-VR (PC display) and VR (virtual reality). The visual P300 is an event-related potential elicited by a visual stimulation, peaking 240-600 ms after stimulus onset. The experiment was designed in order to compare the use of a P300-based brain-computer interface on a PC and with a virtual reality headset, concerning the physiological, subjective and performance aspects. The brain-computer interface is based on electroencephalography (EEG). EEG data were recorded thanks to 16 electrodes. The virtual reality headset consisted of a passive head-mounted display, that is, a head-mounted display which does not include any electronics at the exception of a smartphone. A full description of the experiment is available at https://hal.archives-ouvertes.fr/hal-02078533.

See the example plot_vr_pc_p300_different_epoch_size to compare the performance between PC and VR.

Parameters:

  • virtual_reality (bool (default False)) – if True, return runs corresponding to P300 experiment on virtual reality.

  • screen_display (bool (default True)) – if True, return runs corresponding to P300 experiment on personal computer.

Notes

Note

Cattan2019_VR was previously named VirtualReality. VirtualReality will be removed in version 1.1.

Added in version 0.5.0.

References

[1]

G. Cattan, A. Andreev, P. L. C. Rodrigues, and M. Congedo (2019). Dataset of an EEG-based BCI experiment in Virtual Reality and on a Personal Computer. Research Report, GIPSA-lab; IHMTEK. https://doi.org/10.5281/zenodo.2605204

Added in version 0.5.0.

data_path(subject, path=None, force_update=False, update_path=None, verbose=None)[source]#

Get path to local copy of a subject data.

Parameters:

  • subject (int) – Number of subject to use

  • path (None | str) – Location of where to look for the data storing location. If None, the environment variable or config parameter MNE_DATASETS_(dataset)_PATH is used. If it doesn’t exist, the “~/mne_data” directory is used. If the dataset is not found under the given path, the data will be automatically downloaded to the specified folder.

  • force_update (bool) – Force update of the dataset even if a local copy exists.

  • update_path (bool | None Deprecated) – If True, set the MNE_DATASETS_(dataset)_PATH in mne-python config to the given path. If None, the user is prompted.

  • verbose (bool, str, int, or None) – If not None, override default verbose level (see mne.verbose()).

Returns:

path – Local path to the given data file. This path is contained inside a list of length one, for compatibility.

Return type:

list of str

Examples using moabb.datasets.Cattan2019_VR#

Tutorial 5: Creating a dataset class

Tutorial 5: Creating a dataset class

Changing epoch size in P300 VR dataset

Changing epoch size in P300 VR dataset