Effects of delay on perceived quality, behavior and oscillatory brain activity in dyadic telephone conversations

Stefan Uhrig, Thilo Michael, Sebastian Moller, Peter E. Keller, Jan-Niklas Voigt-Antons

Research output: Chapter in Book / Conference PaperConference Paperpeer-review

6 Citations (Scopus)

Abstract

![CDATA[End-to-end delay is an important factor when studying the quality of modern packet-based telephone conversations. Other than most degradations, delay cannot be assessed by listen-only tests and mainly impacts the structure and interactivity of the conversation. Because of this, the modeling of the perceived quality of conversation under delay is dependent on various instrumental as well as human-related influencing factors. Physiological methods in particular might provide additional insights into how human participants are affected by such quality degradations during natural conversations. In the present experiment, a novel dual-electroencephalo-graphy (dual-EEG) method was employed to investigate the effects of delay on 10 pairs of participants engaging in dyadic conversations. In each test session, neurophysiological activity was registered simultaneously in both interlocutors, who interacted in accordance with short conversation test scenarios (SCIs) through an audio network. Meanwhile, delays of different magnitudes (0, 800, 1600 ms) were inserted into the network, which was expected to interfere with the conversation and cause changes in the participants' internal processing and state. Analysis of subjective and behavioral measures shows a decrease in perceived quality and of conversational interactivity with higher levels of delay. Moreover, an initial intra-brain analysis of the recorded dual-EEG data (N = 18) revealed significant modulations in beta and gamma frequency bands by varying delay level. This suggests that attentional load increased with high delay, probably due to less amounts of single talk and focusing more on the adaptation of the own turn-taking behavior.]]
Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Quality of Multimedia Experience, QoMEX 2018, 29 May-1 June 2018, Cagliari, Italy
PublisherIEEE
Number of pages6
ISBN (Print)9781538626054
DOIs
Publication statusPublished - 2018
EventInternational Conference on Quality of Multimedia Experience -
Duration: 29 May 2018 → …

Publication series

Name
ISSN (Print)2472-7814

Conference

ConferenceInternational Conference on Quality of Multimedia Experience
Period29/05/18 → …

Keywords

  • conversation analysis
  • delays
  • dyadic analysis (social sciences)
  • electroencephalography
  • telephone

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