User expectations and experiences of a speech and thought controlled computer game

Authors:
Hayrettin Gürkök;Gido Hakvoort;Mannes Poel;Anton Nijholt
Affiliations:
University of Twente Enschede, the Netherlands;University of Twente Enschede, the Netherlands;University of Twente Enschede, the Netherlands;University of Twente Enschede, the Netherlands
Venue:
Proceedings of the 8th International Conference on Advances in Computer Entertainment Technology
Year:
2011

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Abstract

Brain-computer interfaces (BCIs) are often evaluated in terms of performance and seldom for usability. However in some application domains, such as entertainment computing, user experience evaluation is vital. User experience evaluation in BCI systems, especially in entertainment applications such as games, can be biased due to the novelty of the interface. However, as the novelty will eventually vanish, what matters is the user experience related to the unique features offered by BCI. Therefore it is a viable approach to compare BCI to other novel modalities, such as a speech or motion recogniser, rather than the traditional mouse and keyboard. In the study which we present in this paper, our participants played a computer game with a BCI and an automatic speech recogniser (ASR) and they rated their expectations and experiences for both modalities. Our analysis on subjective ratings revealed that both ASR and BCI were successful in satisfying participants' expectations in general. Participants found speech control easier to learn than BCI control. They indicated that BCI control induced more fatigue than they expected.