University of Twente Student Theses


A multimodal interactive system for creative expressions

Brugman, Ivo (2012) A multimodal interactive system for creative expressions.

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Abstract:In this Master's thesis, we combined the new developments of multimodal Brain- Computer Interfaces (BCI) and wireless EEG headsets with art by creating BrainBrush, a multimodal interactive system for creative expressions. With BrainBrush, users can paint on a virtual canvas using only their heads. They control the system by moving their heads, blinking their eyes and performing selections using a BCI. We used BrainBrush to research how the different modalities contribute to the user experience and what the added value of BCI is to the system. Thirteen healthy persons painted with the BrainBrush system. Afterwards, a questionnaire was administered to assess the usability of the system. Furthermore, extensive interviews were conducted to evaluate the user experience of the various input modalities and the added value of BCI. Most participants who were able to achieve good control over the modalities, were able to express themselves creatively. However, a number of participants was not able to express themselves creatively, mostly due to problems with the reliability of the modalities. The user experience of the modalities varied. Participants were most positive about the use of head movement. They were also positive about the use of eyeblinks, but less positive about the use of the BCI because of the low reliability and higher relative cost of an error. Recommendations for improvement of the reliability of the modalities have been given. Even though the reliability of the BCI was low, the BCI was considered to have an added value: the use of BCI was considered to be fun and interesting. The BrainBrush system offers a good basis for further developments and research. By incorporating the suggested improvements, the user experience should improve further.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Interaction Technology MSc (60030)
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