To investigate the neuronal processing of acoustical signals in humans, multichannel EEG recordings are performed on subjects hearing binaural stimuli. The data thus obtained are subjected to extensive preprocessing. This is necessary because the curves are contaminated by noise from the environment and by electrical activity of the brain that is not related to the auditory pathway (although it may sound heretical, the latter "signals" are "noise" for our purposes). The preprocessing consists of digital filtering and a number of averaging schemes. For a detailed discussion, you may wish to consult a recent conference proceeding (also available as gzipped ps-file, 91k).
The refined data we obtain in this way is
used to identify equivalent electrical
For more details, please refer to the contributions to the Progress Report (in german) of the Graduate Program in Psychoacoustics of Helmut Riedel , Albertus Grunwald , and Michael Granzow .
If you are interested in neurocognition, check out the home page of the Sonderforschungsbereich Neurokognition (special research project neurocognition), to which this work is related.
This page is maintained by Michael Granzow who is happy about feedback via email.
To AG Medizinische Physik.