Biosignal Processing and Instrumentation

Curriculum Vitea

Armando Barreto's research is in the area of Biosignal Processing and Instrumentation. He leads the Digital Signal Processing Laboratory (http://dsplab.eng.fiu.edu). His research interests include the analysis of Photoplethysmographic (PPG) Blood Volume Pulse (BVP) waveforms for exercise evaluation. He is also involved in the study of Electroencephalogram (EEG) signals and their changes associated with the process of movement preparation, the response to external stimuli or disease, such as Epilepsy, and the processing of Electromyogram (EMG) signals resulting from muscle contraction. Dr. Barreto is working in the development of alternative Human-Computer Interfaces based on EEG, EMG and Eye Gaze tracking techniques, for individuals with movement disabilities. As part of this effort, Dr. Barreto and his team are developing techniques to facilitate computer access to individuals with higher-order refractory imperfections, through on-screen deconvolution of computer images, and computer-based devices to aid in the navigation of blind individuals.

Spectrogram showing the disappearance of the 9 Hz "Mu Rhythm" in the EEG signal collected from the motor cortex of a subject when he transitions from a state of rest to a continuous movement of the contralateral hand.

Selected Publications:

Alonso Jr., M. and Barreto, A. B., “Pre-Compensation for High-Order Aberrations of the Human Eye Using On-Screen Image Deconvolution”, Proceedings of the 25th IEEE Engineering in Medicine and Biology Society Annual International Conference,, September 17-21, 2003, Cancun, Mexico. (CD-ROM format)

Li, C., Zhai, J. and Barreto, A., “Signal Processing Quantification of Changes in the Blood Volume Pulse (BVP) Waveform due to Exercise”, Proceedings of the 25th IEEE Engineering in Medicine and Biology Society Annual International Conference,, September 17-21, 2003, Cancun, Mexico. (CD-ROM format)

Choudhury M., and Barreto A., “Design of a Multi-Sensor System for Indoor Range Measurement as a Navigational Aid for the Blind”, Biomedical Sciences Instrumentation, Vol. 39, pp. 30-35, 2003.

Alonso M., and Barreto A., “Digital Image Processing for Pre-compensation of Higher-Order Aberrations of the Human Eye”, Biomedical Sciences Instrumentation, Vol. 39, pp. 99 - 104, 2003.

Li C., Zhai J. and Barreto A., “Digital Signal Processing Methods for the Evaluation of Blood Volume Pulse (BVP) Waveform Changes due to Exercise”, Biomedical Sciences Instrumentation, Vol. 39, pp. 163 - 168, 2003.