IEEE Trans Haptics. 2017 Oct-Dec;10(4):555-566. doi: 10.1109/TOH.2017.2678502. Epub 2017 Mar 13.
Information provided by sensory systems is inherently ambiguous as to its source in the physical world. To arrive at a coherent representation, perception deploys heuristic rules and multimodal input, which potentially produce errors such as illusions. The current work uses these effects to create apparent tactile motion and illusory depth motion using sparse vibrotactile stimulation across the hands. Experiment 1 showed the effects of vibrotactile duration and temporal separation between the hands on the quality of perceived illusory linear motion. Experiment 2 indicated a compressed linear relation between the visual and tactile speeds, and established a linear function relating visual size to perceived tactile intensity at three durations. Experiment 3 introduced an "M-filter" algorithm that varies tactile stimulus amplitude by a parabolic function based on visual looming and receding. It demonstrated that the M-filters, accompanied by visual depth cues, can induce tactile motion in depth. Experiment 4 showed the M-filter algorithm is necessary to create tactile perception in depth, as opposed to apparent tactile motion. The current research has value for a basic understanding of haptic perception, as well as haptic applications that digitally generate perceptual representations of the distal world on small-sized devices in the space between the hands.
感觉系统提供的信息在物理世界中的来源本质上是模糊的。为了形成一个连贯的表示，感知会运用启发式规则和多模态输入，这可能会产生错觉等错误。当前的工作使用这些效果，通过在手之间稀疏的振动刺激来产生明显的触觉运动和虚幻的深度运动。实验 1 表明了振动持续时间和手之间的时间间隔对手感知虚幻线性运动质量的影响。实验 2 表明视觉和触觉速度之间存在压缩的线性关系，并建立了一个线性函数，将视觉大小与三个时间段内感知到的触觉强度相关联。实验 3 引入了一种“M 滤波器”算法，该算法根据视觉逼近和退避，通过抛物线函数来改变触觉刺激的幅度。它表明，M 滤波器伴随着视觉深度线索，可以在深度中诱导触觉运动。实验 4 表明，M 滤波器算法是在深度中产生触觉感知所必需的，而不是明显的触觉运动。当前的研究对于理解触觉感知具有价值，并且对于在手部之间的小尺寸设备上数字化生成远程世界的感知表示的触觉应用也具有价值。
