Paper: An ERP-based Brain-Computer Interface for text entry using Rapid Serial Visual Presentation and Language Modeling

ACL ID P11-4007
Title An ERP-based Brain-Computer Interface for text entry using Rapid Serial Visual Presentation and Language Modeling
Venue Annual Meeting of the Association of Computational Linguistics
Session System Demonstration
Year 2011
Authors

Event related potentials (ERP) corresponding to stimuli in electroencephalography (EEG) can be used to detect the intent of a per- son for brain computer interfaces (BCI). This paradigm is widely used to build letter-by- letter text input systems using BCI. Neverthe- less using a BCI-typewriter depending only on EEG responses will not be sufficiently accu- rate for single-trial operation in general, and existing systems utilize many-trial schemes to achieve accuracy at the cost of speed. Hence incorporation of a language model based prior or additional evidence is vital to improve accu- racy and speed. In this demonstration we will present a BCI system for typing that integrates a stochastic language model with ERP classifi- cation to achieve speedups, via the rapid serial visual presentat...