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Article type: Research Article
Authors: Aurup, Golam Mohammad | Akgunduz, Ali
Affiliations: Department of Mechanical and Industrial Engineering, Concordia University, Montreal, Canada
Note: [] Corresponding author. Email: Akgunduz@encs.concordia.ca. Tel: (+1)514-848 2424
Abstract: Understanding of user needs and preferences, and incorporating them into product designs are crucial for new products to be successful in today's highly competitive marketplace. This paper introduces a unique methodology to capture user preferences from biological signals. The proposed method successfully utilizes one of the most complex phenomenons of the human body, bio-signals for preference extraction. Bio-signals are magnetic fields that are generated by the neurons as a response to a person's surroundings. Due to its complexity, interpretation of bio-signals in the form of natural communication channels is extremely difficult. On the other hand, our experiments with potential users of various types of products revealed that detectable shifts from steady state levels of brain signals in the positive or negative direction are strongly correlated with the individual's preferences on alternative designs. From experiments conducted on 14 different subjects we conclude that when the alpha-peak frequencies (EEG signals at the 8–12 Hz band) are captured during a user's interaction with two competing product design solutions, the lower alpha-peak value indicates a higher preference over the competing product for right-sided subjects. The opposite effect is observed for the left-sided subjects.
Keywords: preference extraction, electroencephalography (EEG), alpha-peak, emotional valence, pairwise evaluation
DOI: 10.3233/jid-2012-0021
Journal: Journal of Integrated Design & Process Science, vol. 16, no. 4, pp. 3-18, 2012
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