Number of co-authors:12
Number of publications with 3 favourite co-authors:Esa Tuulari:Toni Pakkanen:Jani Heikkinen:
Jussi Rantala's 3 most productive colleagues in number of publications:Roope Raisamo:53Veikko Surakka:28Jukka Raisamo:11
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Personal Homepage: http://www.uta.fi/~jussi.e.rantala
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Publications by Jussi Rantala (bibliography)
Heikkinen, Jani, Rantala, Jussi, Olsson, Thomas, Raisamo, Roope and Surakka, Veikko (2011): Exploring the effects of cumulative contextual cues on interpreting vibrotactile messages. In: Proceedings of 13th Conference on Human-computer interaction with mobile devices and services 2011. pp. 1-10. Available online
The sense of touch has been shown to convey emotive information and nuances in face-to-face interpersonal communication, but its applications in mobile communication technologies are still limited. One of the challenges for such new communication medium is the interpretation of tactile messages. This paper presents a study with an early prototype of a mobile tactile device. Twenty novice participants interpreted four messages consisting of a four-channel vibrotactile stimulus, complemented with three cumulative textual cues regarding 1) the communication setting, 2) sender, and 3) situation. The subjective interpretations were assessed with four semantic differential scales, and the reasoning behind the interpretations was inquired by interviewing. The findings show that the intensity and, to some degree, the friendliness of the message could be identified from the tactile-only message. However, to correctly interpret the degree of formality or emotionality in the message, also contextual cues were needed.
© All rights reserved Heikkinen et al. and/or ACM Press
Lylykangas, Jani, Surakka, Veikko, Rantala, Jussi, Raisamo, Jukka, Raisamo, Roope and Tuulari, Esa (2009): Vibrotactile information for intuitive speed regulation. In: Proceedings of the HCI09 Conference on People and Computers XXIII 2009. pp. 112-119. Available online
The present aim was to investigate if controlled vibrotactile stimulation can be used to inform users on how to regulate their behavior. 36 stimuli were varied by frequency modulation (i.e., ascending, constant, and descending), duration (i.e., 500, 1750, and 3000 ms), waveform (i.e., sine and sawtooth), and body location (i.e., wrist and chest), and presented to 12 participants. The participants were to evaluate without any training the meaning of each presented stimuli using three response options: 'accelerate your speed', 'keep your speed constant', and 'decelerate your speed'. Participants rated also how emotionally pleasant and arousing the different stimulations were. The results showed that the stimuli were predominantly perceived analogously with the vibration frequency modulation. The best stimuli represented 'accelerate your speed', 'keep your speed constant', and 'decelerate your speed' information in
© All rights reserved Lylykangas et al. and/or their publisher
Heikkinen, Jani, Rantala, Jussi, Olsson, Thomas, Raisamo, Roope, Lylykangas, Jani, Raisamo, Jukka, Surakka, Veikko and Ahmaniemi, Teemu Tuomas (2009): Enhancing personal communication with spatial haptics: Two scenario-based experiments on gestural interaction. In J. Vis. Lang. Comput., 20 (5) pp. 287-304. Available online
Salminen, Katri, Surakka, Veikko, Lylykangas, Jani, Raisamo, Jukka, Saarinen, Rami, Raisamo, Roope, Rantala, Jussi and Evreinov, Grigori (2008): Emotional and behavioral responses to haptic stimulation. In: Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems April 5-10, 2008. pp. 1555-1562. Available online
A prototype of friction-based horizontally rotating fingertip stimulator was used to investigate emotional experiences and behavioral responses to haptic stimulation. The rotation style of 12 different stimuli was varied by burst length (i.e., 20, 50, 100 ms), continuity (i.e., continuous and discontinuous), and direction (e.g., forward and backward). Using these stimuli 528 stimulus pairs were presented to 12 subjects who were to distinguish if stimuli in each pair were the same or different. Then they rated the stimuli using four scales measuring the pleasantness, arousal, approachability, and dominance qualities of the 12 stimuli. The results showed that continuous forward-backward rotating stimuli were rated as significantly more unpleasant, arousing, avoidable, and dominating than other types of stimulations (e.g., discontinuous forward rotation). The reaction times to these stimuli were significantly faster than reaction times to discontinuous forward and backward rotating stimuli. The results clearly suggest that even simple haptic stimulation can carry emotional information. The results can be utilized when making use of haptics in human-technology interaction.
© All rights reserved Salminen et al. and/or ACM Press
Pakkanen, Toni, Lylykangas, Jani, Raisamo, Jukka, Raisamo, Roope, Salminen, Katri, Rantala, Jussi and Surakka, Veikko (2008): Perception of low-amplitude haptic stimuli when biking. In: Digalakis, Vassilios, Potamianos, Alexandros, Turk, Matthew, Pieraccini, Roberto and Ivanov, Yuri (eds.) Proceedings of the 10th International Conference on Multimodal Interfaces - ICMI 2008 October 20-22, 2008, Chania, Crete, Greece. pp. 281-284. Available online
Pakkanen, Toni, Lylykangas, Jani, Raisamo, Jukka, Raisamo, Roope, Salminen, Katri, Rantala, Jussi and Surakka, Veikko (2008): Perception of low-amplitude haptic stimuli when biking. In: Proceedings of the 2008 International Conference on Multimodal Interfaces 2008. pp. 281-284. Available online
Haptic stimulation in motion has been studied only little earlier. To provide guidance for designing haptic interfaces for mobile use we carried out an initial experiment using C-2 actuators. 16 participants attended in the experiment to find out whether there is a difference in perceiving low-amplitude vibrotactile stimuli when exposed to minimal and moderate physical exertion. A stationary bike was used to control the exertion. Four body locations (wrist, leg, chest and back), two stimulus durations (1000 ms and 2000 ms) and two motion conditions with the stationary bicycle (still and moderate pedaling) were applied. It was found that cycling had significant effect on both the perception accuracy and the reaction times with selected stimuli. Stimulus amplitudes used in this experiment can be used to help haptic design for mobile users.
© All rights reserved Pakkanen et al. and/or their publisher
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