IEEE Trans Haptics. 2023 Oct-Dec;16(4):861-867. doi: 10.1109/TOH.2023.3322557. Epub 2023 Dec 21.
Several studies in the affective haptics research field showed the potential of using haptic technology to convey emotions in remote communications. In this context, it is of interest to simplify the haptic feedback without altering the informative content of the stimulus, with a two-fold advantage. On one side, it would allow the development of affective haptic devices whose technological complexity is limited, hence more compatible with wearability and portability requirements. On the other side, having a simplified set of stimuli would decrease the amount of data to be transmitted, thus improving the overall quality of remote haptic interactions. In this work, we investigated the correlation between the parameters regulating a caress-like stimulation and the perceived pleasantness. This was done by means of two experiments, in which we asked subjects to adjust the temperature and the motion velocity of a set of stimuli in order to find the most pleasant combination. Results indicated that subjects preferred different values of temperature and velocity of the stimulus depending on the proposed tactile stimulation. A small difference in the pleasantness ratings was observed between caresses provided with linear movements and those given as discrete sequences of taps. In particular, participants preferred linear movements set at 34.5 C and 3.4 cms. As regards caress-like stimuli provided with discrete sequences of taps, the preferred temperature and velocity were 33.2 C and 2.9 cms, respectively. The presence of vibration had a little effect on the perceived pleasantness.
在情感触觉研究领域的几项研究表明，使用触觉技术在远程通信中传递情感具有潜力。在这种情况下，简化触觉反馈而不改变刺激的信息内容是很有意义的，这具有双重优势。一方面，它将允许开发技术复杂性有限的情感触觉设备，从而更兼容可穿戴性和便携性要求。另一方面，拥有简化的刺激集将减少要传输的数据量，从而提高远程触觉交互的整体质量。在这项工作中，我们研究了调节类似抚摸刺激的参数与感知愉悦度之间的相关性。这是通过两个实验来完成的，在实验中，我们要求参与者调整一组刺激的温度和运动速度，以找到最愉悦的组合。结果表明，参与者根据提出的触觉刺激偏好不同的温度和速度值。在提供线性运动和离散触摸序列的抚摸之间，愉悦度评分仅存在细微差异。特别是，参与者更喜欢设定在 34.5°C 和 3.4 cms 的线性运动。至于具有离散触摸序列的类似抚摸刺激，首选的温度和速度分别为 33.2°C 和 2.9 cms。振动的存在对感知愉悦度的影响很小。
