Event

The Department of Physics will host a seminar on the use of the electroencephalogram (EEG) in detecting and recording changes in brain wave patterns in healthy and unhealthy people.

Mr. Oba Heru Ranu will present his seminar titled, “Analytical Techniques for EEG Waves in Healthy Volunteers during Cognitive and Visual Tasks” on Thursday 28^th February, 2008 in room 413 of the Natural Sciences Building, Faculty of Science and Agriculture from 2:00 p.m.

All staff and students are invited.

 

THE FOLLOWING IS THE ABSTRACT: 

The electroencephalogram (EEG) is a record of brain electrical activity over time. Clear changes can be observed between EEG recordings obtained during wake and sleep states. EEG recordings are used in clinical practice to monitor different levels of anesthesia, epilepsy, brain death and other conditions. Improvements in the detection of changes in EEG recordings can expand its utility in clinical investigations. Tsallis-like information measures, wavelet analysis, spectral analysis and dimensional analysis have all been used to investigate EEG signals. The ability of these techniques to detect changes in the evolution of a Henon’s map is demonstrated. In this study EEG is recorded from a group of normal volunteers engaging a cognitive task during the awake-state, and while being exposed to a visual stimulus. Electrodes are placed according to the 10 - 20 EEG system of electrode placement. The above analytical techniques are used to quantify these induced changes in the EEG.

This work is supported by the Inter American Development Bank / U.W.I. Research Fund.