Subject Independent Brain-Computer Interface Spelling System


Korkmaz O. E., Turay T.

5th International Neuroergonomics Conference , Bordeaux, Fransa, 8 - 12 Temmuz 2024, ss.123-127, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Bordeaux
  • Basıldığı Ülke: Fransa
  • Sayfa Sayıları: ss.123-127
  • Atatürk Üniversitesi Adresli: Evet

Özet

The aim of this study is to introduce a novel P300 speller paradigm for facilitating communication of individuals with severe motor disabilities who preserve mental abilities but lack the physical abilities to speak. The study proposes integration of a three dimensional (3D) and column-only P300 speller paradigm with an artificial neural network (ANN) and involves generating population-level feature sets. Such an approach holds promise for removing the necessity to obtain subject-specific training data-sets and is especially practical for patients with motor impairments from whom collecting a training data-set prior to operating a BCI is not feasible.

EEG data were collected from 110 healthy subjects while they were exposed to a 3D and column-only flashing paradigm. The offline classification model was built with ANN which yielded a 2-class classification accuracy of 99.40% ± 0.21. The performance of this offline model was tested in online sessions conducted with 30 new participants. An online character identification success rate of 95.41±% was achieved across all participants.