Raisamo Jukka, Raisamo Roope, Surakka Veikko
IEEE Trans Haptics. 2013 Oct-Dec;6(4):517-21. doi: 10.1109/TOH.2013.25.
Illusory vibrotactile movement can be used to provide directional tactile information on the skin. Our research question was how the presentation method affects the perception of vibrotactile movement. Illusion of vibrotactile mediolateral movement was elicited to a left dorsal forearm to investigate cognitive and emotional experiences to vibrotactile stimulation. Eighteen participants were presented with stimuli delivered to a linearly aligned row of three vibrotactile actuators. Three presentation methods were used--saltation, amplitude modulation, and a hybrid method--to form 12 distinct patterns of movement. First, the stimuli were compared pairwise using a two-alternative forced-choice procedure (same-different judgments). Second, the stimuli were rated using three nine-point bipolar scales measuring the continuity, pleasantness, and arousal of each stimulus. The stimuli presented with the amplitude modulation method were rated significantly more continuous and pleasant, and less arousing. Strong correlations between the cognition-related scale of continuity and the emotion-related scales of pleasantness and arousal were found: More continuous stimuli were rated more pleasant and less arousing.
虚幻的振动触觉运动可用于在皮肤上提供方向触觉信息。我们的研究问题是呈现方式如何影响对振动触觉运动的感知。在左前臂背侧引发振动触觉的内外侧运动错觉，以研究对振动触觉刺激的认知和情感体验。18名参与者接受了施加到线性排列的三个振动触觉致动器排上的刺激。使用了三种呈现方法——跳跃、幅度调制和混合方法——以形成12种不同的运动模式。首先，使用二选一强制选择程序（相同-不同判断）对刺激进行两两比较。其次，使用三个九点双极量表对刺激进行评分，这些量表测量每个刺激的连续性、愉悦度和唤醒度。用幅度调制方法呈现的刺激在连续性和愉悦度方面的评分显著更高，而唤醒度更低。在与认知相关的连续性量表和与情感相关的愉悦度和唤醒度量表之间发现了强相关性：连续性越高的刺激，其愉悦度评分越高，唤醒度评分越低。
