This dataset comprises preprocessed EEG recordings from 8 healthy subjects performing imagined speech tasks involving three vowel phonemes (a, i, u). Participants received auditory and visual cues to imagine speaking each vowel, with 64-channel EEG data acquired at 256 Hz. The dataset includes 2,400 base trials (8 subjects × 300 trials per subject) with 3 overlapping 2-second epochs extracted per trial, yielding 7,200 total epochs, analyzed using Riemannian manifold-based feature extraction and relevance vector machine classification for brain-computer interface applications. This is a MOABB (Mother of All BCI Benchmarks) benchmark collection dataset converted to BIDS format.
- Participants
- 8
- Channels
- 60 (10-10)
- HED
- v8.4.0
- Size
- 505 MB
- Version
- v1.0.1
- Updated
- Jul 10, 2026