How to read brain activity?

The electroencephalogram (EEG) is widely used by physicians and scientists to study brain function and to diagnose neurological disorders. However, it has remained largely unknown whether the electrodes on the head give an exact view of what is happening inside the brain. Scientists at the Max Planck Institute for Biological Cybernetics in Tuebingen, Germany, have now found a crucial link between the activity generated within the brain to that measured with EEG. These findings will provide a better understanding of the waveforms measured with EEG, and thus potentially allow for a better diagnosis and subsequent treatment of patients...

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