Effect of the Stimulus Duty Cycle on Steady-State Visual Evoked Potential detection

Hubert Cecotti (1, 2)

1 GIPSA-VIBS - GIPSA - Vision and Brain Signal Processing
2 IAT - Institute of Automation - University of Bremen

The detection of Steady State Visual Evoked Potentials (SSVEP) in the eletecroencephalogram (EEG) is one way to create efficient non-invasive Brain-Computer Interfaces (BCIs). A visual stimulus shall be presented to the user to produce an SSVEP response. This stimulus is usually a flickering light at a particular frequency. One issue for an SSVEP based BCI can be the flickering stimuli. We propose to evaluate the impact of the duty cycle of the flickering lights for evoking SSVEP responses. Three paradigms based on different duty cycles over six subjects are evaluated and compared. The offline classification of the obtained SSVEP responses is performed with spatial filters based on the Principal Component Analysis.

Mots clés: Brain-Computer Interface (BCI); Steady-State Visual Evoked Potentials (SSVEP); Duty Cycle; Signal detection; BMI and signal processing; Neural interfaces and softwares; Action selection

Domaines: Apprentissage [cs.LG]; Neurosciences

Hubert Cecotti. Effect of the Stimulus Duty Cycle on Steady-State Visual Evoked Potential detection. Neurocomp 2010 - Cinquième conférence plénière française de Neurosciences Computationnelles - 5th French Conference on Computational Neuroscience / Cinquième conférence plénière française de Neurosciences Computationnelles, Oct 2010, Lyon, France. pp. 205-209. ⟨hal-00536118⟩