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Tactile-Sight: A sensory substitution device based on distance-related vibrotactile flow

机译:Tactile-Sight:一种基于距离相关的触觉流的感觉替代装置

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摘要

Sensory substitution is a research field of increasing interest with regard to technical, applied and theoretical issues. Among the latter, it is of central interest to understand the form in which humans perceive the environment. Ecological psychology, among other approaches, proposes that we can detect higher‐order informational variables (in the sense that they are defined over substantial spatial and temporal intervals) that specify our interaction with the environment. When using a vibrotactile sensory substitution device, it is reasonable to ask if stimulation on the skin may be exploitable to detect higher‐order variables. Motivated by this question, a portable vibrotactile sensory substitution device was built, using distance‐based information as a source and driving a large number of vibrotactile actuators (72 in the reported version, 120 max). The portable device was designed to explore real environments, allowing natural unrestricted movement for the user while providing contingent real‐time vibrotactile information. Two preliminary experiments were performed. In the first one, participants were asked to detect the time to contact of an approaching ball in a simulated (desktop) environment. Reasonable performance was observed in all experimental conditions, including the one with only tactile stimulation. In the second experiment, a portable version of the device was used in a real environment, where participants were asked to hit an approaching ball. Participants were able to coordinate their arm movements with vibrotactile stimulation in appropriate timing. We conclude that vibrotactile flow can be generated by distance‐based activation of the actuators and that this stimulation on the skin allows users to perceive time‐to contact related environmental properties.
机译:感觉替代是对技术,应用和理论问题越来越感兴趣的研究领域。在后者中,最重要的是要了解人类感知环境的形式。生态心理学以及其他方法提出,我们可以检测到较高级别的信息变量(从某种意义上说,它们是在相当大的时空间隔内定义的),这些变量指定了我们与环境的相互作用。当使用触觉感觉替代设备时,合理地询问是否可以利用皮肤刺激来检测高阶变量。受此问题的启发,制造了一种便携式的触觉感觉替代设备,该设备使用基于距离的信息作为来源并驱动了大量的触觉致动器(报告版本中为72个,最大120个)。便携式设备旨在探索真实环境,在提供偶然的实时触觉信息的同时,允许用户自然地不受限制地运动。进行了两个初步实验。在第一个中,要求参与者检测在模拟(桌面)环境中接近球的时间。在所有实验条件下都观察到了合理的性能,包括仅有触觉刺激的条件。在第二个实验中,该设备的便携式版本用于实际环境中,要求参与者击中一个接近的球。参与者能够在适当的时间协调他们的手臂运动与触觉刺激。我们得出结论,可通过基于距离的执行器激活来产生触觉动力流,并且对皮肤的这种刺激使用户能够感知接触相关环境特性的时间。

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