Carmen Branje, the 11th annual Human Factors IUW workshop

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  • Motivation for this work
    To augment closed captioning
  • High Density Vibrotactile Display
    Multiple Independent Channels
    Voice Coils vs Motors
    Model Human Cochlea
    Track Model vs Frequency Model
  • This chair was at the science centre
    Actuators, Air Jets
  • Carmen Branje, the 11th annual Human Factors IUW workshop

    1. 1. The Horror of Vibrotactile Stimulation Carmen Branje Ryerson - Centre for Learning Technology University of Toronto - Dept of Mechanical and Industrial Engineering
    2. 2. Some of the People • Dr. Deborah Fels • Dr. Frank Russo • Dr. Maria Karam • Gabe Nespoli • Graham Smith (Artist) • Emily Price
    3. 3. Previous Work • Previous work has shown that soundtracks can influence physiological response to film. (Thayer and Levenson 1983 1. no audio 2. calming documentary music 3. frightening music
    4. 4. Previous Work • A considerable literature exists examining the vibrotactile perceptual abilities of humans (e.g., Rothenberg & Verrillo, 1976; Schürmann, Caetano, Hlushchuk, Jousmäki, & Hari, 2006; Verrillo, 1992; Von Bekesy, 1959) • Von Bekesy (1959) found that eight different qualities of sound (pitch, loudness, volume, roughness, direction, distance, on-and-off effects and rhythm) all have vibrotactile equivalents.
    5. 5. Previous Work • There are about 8-10 tactile “notes” within the tactile range (Branje, 2008) • Large contactors appears to increase discrimination ability (Branje, 2008) • Differences in timbre can experienced through the tactile channel (Russo, 2008)
    6. 6. Previous Work • Some of the emotional content music can be conveyed through the tactile channel (Karam, 2008) • The separation of audio signals onto multiple vibrotactile channels is more effective at expressing emotional content than using a complete audio signal as vibrotactile stimuli. (Karam, 2008)
    7. 7. Current Study • Explore Emoti-Chair in an film setting • ~60 hearing participants (artificially deafened) • Measured Skin Conductance Levels • Mixed Design • Participants exposed to one audio condition • Participants exposed to four film clips
    8. 8. Audio Conditions 1. Silence 2. Envelope Following Whitenoise 3. Vibrations Only 4. Audio Only 5. Vibrations Plus Audio
    9. 9. Video Clips • 4 clips from popular horror films used, within subject • Two were “startling” clips • Two were “suspenseful” clips
    10. 10. Conclusions • Evidence presented suggests some of the emotional content of the film sound is conveyed through the Emoti-Chair • Further investigation – Different types of clips – Novelty Effect / Longitudinal Effects – Amplitude vs Frequency – Deaf subjects
    11. 11. Thanks / Questions?

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