K. Schweitzer, M. Gärtner, A. Riester, I. Rösiger, K. Eckart, J. Kuhn, and G. Dogil. Speech beyond speech towards a better understanding of the most important biosignal : 16th Annual Conference of the International Speech Communication Association (INTERSPEECH 2015), 1, page 319-323. Red Hook, NY, Curran, (2015)