Penso and Brain Computer Interfaces

Progress in the Brain-Computer Interfaces (BCI) foundational disciplines (neurology, engineering, IT, etc) have produced the first systems beneficial to people with disabilities (Wolpaw, Birbaumer et al. 2002). In particular, more advanced electrophysiological recording techniques are offering further options. Research in subdural and intracortical electrodes has resulted in EEGs with high topographical resolution. Because these methods are invasive they would always have an impact on a more limited number of people than scalp-recorded EEG activity.

In this project we are investigating flexible ‘user-friendly’ BCI system. In this project we are developing hardware and software to support BCI applications that reduce workload and discomfort when used over extended periods of time.

We are developing new hardware with a focus on the development of screened ‘dry’ electrodes in which we eliminate the need for scalp preparation and electrolytic gel.We are developing a configurable bio-amplifier capable of acquiring EKG, EMG and EEG data. A major innovation in our design is the ultra high input impedance that allows us to use non-standard, insulated and contact-less electrodes for long term recording in real environments. The combination of high-impedance amplifier and novel electrodes is an innovation that provides cleaner data than any known commercially-available system. Furthermore, the new electrode solution was developed utilising a conductive rubber where an array of electrodes can be moulded in liquid form to any customisable shape. For wireless communications we have interfaced the system with a very low power Bluetooth module that will allow a more mobile system.

We are also developing new software that will learn faster and better how to recognize the subject's brain signal.We have are evaluating the BCI in the context of different applications.

Whenever possible we make the outcomes of our research available for other researchers to use. You can download our integration of BCI2000 (a popular BCI software) with Weka (a popular Machine learning tool) from this GoogleCode repository. If you use it, please cite:

Omar Alzoubi, Irena Koprinska, Rafael A. Calvo. Classification of Brain-Computer Interface Data. The Australasian Data Mining Conference: AusDM 2008. Stamford Grand, Glenelg, Adelaide, 27-28 November 2008 PDF

Sneak previews

  • Mobile BCI: Playing Breakout on the mobile phone. (AVI). Video by Dorian Peters, Rafael A. Calvo, Payam Aghaeipour.
  • Preparing the subject (AVI), Using the dry electrodes to play Pong (AVI)
  • A USYD press interview featuring Rafael and Penso (www)

Publications

  • Gaetano Gargiulo, Paolo Bifulco, Rafael A. Calvo, Mario Cesarelli, Craig Jin and André van Schaik. Mobile biomedical sensing with dry electrodes. 2008 Fourth International Conference on Intelligent Sensors, Sensor Nertworks and Information Processing (ISSNIP 2008). December 15-18. Sydney, Australia.
  • Brain-Computer Interface: Next Generation Thought Controlled Distributed Video Game Development Platform. Payam Aghaei Pour, Tauseef Gulrez, Omar Al-Zoubi and Rafael A. Calvo. IEEE Computational Intelligence and Games Symposium. Perth, Australia.
  • Omar Alzoubi, Irena Koprinska, Rafael A. Calvo. Classification of Brain-Computer Interface Data. The Australasian Data Mining Conference: AusDM 2008 Stamford Grand, Glenelg, Adelaide, 27-28 November 2008 [PDF]
  • Gaetano Gargiulo, Paolo Bifulco, Rafael A. Calvo, Mario Cesarelli, Craig Jin and André van Schaik. A mobile EEG system with dry electrodes. IEEE Biomedical Circuits and Systems Conference - Biocas 2008. November 20-22. Baltimore MD. [PDF]
  • Gargiulo, G., Bifulco, P., Calvo, R. A., Cesarelli, M., Fratini, A., Jin, C. and A.van Schaik. "A wearable dry-electrode-capable Bluetooth personal monitoring system". Paper presented at the 4th European Congress for Medical and Biomedical Engineering, Antwerp, Belgium. EMBEC 2008, 23-27 November.
  • G. Gargiulo, R. A. Calvo, P. Bifulco, M. Cesarelli, A. Fratini, C. Jin, and A.van Schaik. "Comparison of EEG recording using a new device with dry electrodes with a conventional EEG device".Epilepsy Society of Australia - 23rd Annual Scientific Meeting. Sydney 5-7 November, 2008.
  • Rafael A. Calvo, Gaetano Gargiulo, André van Schaik, Craig Jin. "Penso: towards a wearable BCI. MAIA BCI Workshop. Katholieke Universiteit Leuven, June 2007. [PDF].

People

Collaborators

  • Armin Mohamed (Royal Prince Alfred Hospital)
  • Mario Cesarelli and Paolo Bifulco (University of Naples)
  • Taussef Gulrez (Dubai)