Quantitative Characterization of Haptic Sensory Adaptation Evoked Through Transcutaneous Nerve Stimulation
Quantitative Characterization of Haptic Sensory Adaptation Evoked Through Transcutaneous Nerve Stimulation
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DOI：
10.1109/ichms56717.2022.9980598
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
Nita Prabhu;Luis Vargas;Xiaogang Hu
中科院分区：
文献类型：
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作者：
Nita Prabhu;Luis Vargas;Xiaogang Hu
目的：触觉感知是双向人机交互的重要组成部分，允许用户更好地与他们的环境交互。沿着个人的手的人工触觉沿着可以经由非侵入性电神经刺激来诱发;然而，连续刺激可以导致随着时间的推移感官知觉的适应。在这项研究中，我们试图通过感知的感觉强度随时间的变化来量化适应概况。方法：使用沿着上臂内侧靠近正中神经和尺神经放置的2x 5电极网格，对周围神经束进行非侵入性刺激诱发触觉感知。选择一对电极，沿前臂和手诱发触觉感觉沿着。在110秒的连续刺激试验期间，提供了刚好低于运动阈值的恒定刺激幅度。每个受试者被指示按在力传感器上，产生与触觉感觉的感知强度相匹配的力幅度。主要发现：力衰减（即，感觉强度）。还观察到受试者之间衰变速率和衰变开始的变化。意义：初步研究结果建立了周围神经刺激的感觉适应概况。考虑这些对象特定的适应简档可以允许机器人设备和用户之间更稳定的通信。此外，感官适应表征可以促进新刺激策略的开发，这些新刺激策略可以减轻这些观察到的适应，从而实现更好和更稳定的人机交互体验。
Objective: Haptic perception is an important component of bidirectional human-machine interactions that allow users to better interact with their environment. Artificial haptic sensation along an individual’s hand can be evoked via noninvasive electrical nerve stimulation; however, continuous stimulation can result in adaptation of sensory perception over time. In this study, we sought to quantify the adaptation profile via the change in perceived sensation intensity over time. Approach: Noninvasive stimulation of the peripheral nerve bundles evoked haptic perception using a 2x5 electrode grid placed along the medial side of the upper arm near the median and ulnar nerves. An electrode pair that evoked haptic sensation along the forearm and hand was selected. During a trial of 110-s of continuous stimulation, a constant stimulus amplitude just below the motor threshold was delivered. Each subject was instructed to press on a force transducer producing a force amplitude matched with the perceived intensity of haptic sensation. Main Findings: A force decay (i.e., intensity of sensation) was observed in all 7 subjects. Variations in the rate of decay and the start of decay across subjects were also observed. Significance: The preliminary findings established the sensory adaptation profile of peripheral nerve stimulation. Accounting for these subject-specific profiles of adaptation can allow for more stable communication between a robotic device and a user. Additionally, sensory adaptation characterization can promote the development of new stimulation strategies that can mitigate these observed adaptations, allowing for a better and more stable human-machine interaction experience.