TU Berlin

Quality and Usability LabStefan Uhrig

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Stefan Uhrig

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Biography

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)

Contact

Address

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

Publications

Does P3 Reflect Speech Quality Change? Controlling for Auditory Evoked Activity in Event-Related Brain Potential (ERP) Waveforms
Citation key uhrig2019c
Author Uhrig, Stefan and Perkis, Andrew and Behne, Dawn
Title of Book 2019 IEEE International Symposium on Multimedia (ISM)
Pages 1–4
Year 2019
ISBN 978-1-7281-5606-4
DOI 10.1109/ISM.2019.00035
Location San Diego, CA
Address San Diego, CA
Month dec
Note online
Publisher IEEE
Series IEEE ISM
How Published Fullpaper
Abstract 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.
Link to publication Link to original publication Download Bibtex entry

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