Sascha Meyen

Sascha Meyen

Eberhard Karls Universität Tübingen

Experimental Cognitive Science

Sand 6 / room F116

72076 Tübingen



E-Mail: sascha.meyen (at)

Phone: +49 (0)7071 29-70409

Office hours: 13:00-15:00 (send a short email beforehand)


I apply Information Theory to reseach on human consciousness.

Several influential papers claim that unconscious processes convey more information than conscious processes based on a problematic methodology. We re-analyze these results measuring how much information is actully processed. Contrary to the claims, it seems that humans can consciously report as much information as so-called 'unconscious' processes convey.

In such experiments participants see stimuli from either category A or B for a very short amount of time (and followed by a mask). Then they are asked: 'What did you see, a stimulus form category A or B?' They only have a gut feeling but sometimes they are very certain about their answer. Restricting them to a binary answer (A or B) lumps together 'I am certain it was A' and 'I am not sure, maybe A'. This pooling of certain and uncertain answers discards confidence-information. I investigate the implications under the term theoretical boosting performance.


I studied Human-Computer-Interaction (B.Sc.) and Psychology (B.Sc.) simultaneously and after that Informatics (M.Sc.) at the University of Hamburg. Starting with my master thesis I worked at the Theory of Machine Learning and Experimental Cognitive Science groups in Tübingen. Now I work as a Ph.D. student in a joint project between both groups.


  • Meyen, S., von Luxburg, U., & Franz, V. H. (2018, March). Reviewing evidence for superior unconscious processing: Do we really perceive more than we know? Poster session presented at Tagung experimentell arbeitender Psychologen, Marburg, Germany.

  • Meyen, S., von Luxburg, U., & Franz, V. H. (2018, April). Reviewing evidence for superior indirect discrimination performance. Poster session presented at Collaborative Reserach Center (SFB) 1233 ”Robust Vision” retreat 2018, Reutlingen, Germany.

  • Meyen, S., Zerweck, I., Amado, C., von Luxburg, U., & Franz, V. H. (2018, August). Reviewing evidence for superior visual processing without awareness: Do we really process more than we can know? Poster session presented at the European Conference on Visual Perception, Trieste, Italy.