Stimulus tagging using aperiodic visual stimulation in a VEP-based BCI

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Part 1: project profile

Project name

Aperiodic visual stimulation in a VEP-based BCI

Project short description

Visual-evoked potentials (VEPs) are a possible way to drive the a Brain-Computer Interface (BCI). This projects aims at maximizing the discrimination between different stimuli by using numerical codes derived from techniques of digital telecommunications.


Start date: 2009/10/01

People involved

Project head(s)
Students currently working on the project

Laboratory work and risk analysis

(work in progress) Several EEG sessions will be recorded. Data acquisition is performed at the IIT-Lab. All risks are those related to the use of video terminals and electrical devices.

Part 2: project description

What this project means to demonstrate is the possibility to extend the SSVEP paradigm to multiple visual signals (i.e. blinking lights) using a numeric encoding, in a way similar to what has already been attempted with noise-tagging.

Libraries used

Simple Directmedia Layer OpenGL


  • J.R. Wolpaw et al., Brain-computer interfaces for communication and control
  • Erich E. Sutter., The brain response interface: communication through visually-induced electrical brain responses
  • J. Farquhar, J. Blankespoor, R. Velk, P. Desain, Towards a noise tagging auditory BCI-Paradigm, in 4th International BCI Workshop and Training Course 2008