Tübingen scientists examine the comparability of different brain signals
A new study by scientists from Tübingen shows that measurement results of various common methods for the determination of brain activity can be largely directly correlated. Two of these—electroencephalography (EEG) and magnetoencephalography (MEG)—are non-invasive procedures that measure cerebral activity at the surface of the head and do not require surgical intervention. The third method is invasive electrophysiology, in which microelectrodes record the activity of individual to thousands of nerve cells directly in the brain. Researchers led by Professor Markus Siegel at the Hertie Institute for Clinical Brain Research and the University of Tübingen, together with colleagues from the Massachusetts Institute of Technology (USA), have now used all three methods in parallel in a visual experiment. They demonstrated that EEG, MEG, and invasive electrophysiology record very similar information during the processing of visual stimuli, such as the color and direction of movement of points. This allows to better link findings from invasive and non-invasive experiments in the future.
Please refer to the German website for the complete press release
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