TU Berlin

Quality and Usability LabStefan Uhrig

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Stefan Uhrig



Stefan received M.Sc. degrees in Psychology at the University of Giessen (2013) and in Human Factors at the Technical University of Berlin (2016). Since February 2017, he is working as a scholarship PhD student at the Quality and Usability Lab.

Research Topics

► Perceived quality (with focus on transmitted speech)

► Psychophysiology (electroencephalography, EEG)

► Data analysis and statistics

Current Project

Physiological correlates of perceived quality, presence and immersion in virtual environments (part of joint PhD program between TU Berlin, Germany, and NTNU Trondheim, Norway)



Quality and Usability Lab
Deutsche Telekom Laboratories
Technische Universität Berlin
Ernst-Reuter-Platz 7
D-10587 Berlin, Germany


Does P3 Reflect Speech Quality Change? Controlling for Auditory Evoked Activity in Event-Related Brain Potential (ERP) Waveforms
Zitatschlüssel uhrig2019c
Autor Uhrig, Stefan and Perkis, Andrew and Behne, Dawn
Buchtitel 2019 IEEE International Symposium on Multimedia (ISM)
Seiten 1–4
Jahr 2019
ISBN 978-1-7281-5606-4
DOI 10.1109/ISM.2019.00035
Ort San Diego, CA
Adresse San Diego, CA
Monat dec
Notiz online
Verlag IEEE
Wie herausgegeben Fullpaper
Zusammenfassung The P3 component of the event-related brain potential (ERP) is promoted as an indicator of perceived change in speech quality. However, previously identified effects of quality change on P3 might actually be traced back to modulations in earlier portions of the ERP signal, evoked by physical variability between test stimuli. The present study introduces a rigorous control procedure to isolate late ERP signal portions by eliminating such physical stimulus confounds. Due to successful removal of auditory evoked activity, observed quality-related ERP signal modulations can be attributed to P3 with higher validity. The implemented control procedure promises to form an essential part of future experimental designs in psychophysiological assessment of multimedia quality.
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