论文标题

麦角酸皮:步行期间的预期速曲局反馈到压力中心

ErgoTac-Belt: Anticipatory Vibrotactile Feedback to Lead Centre of Pressure during Walking

论文作者

Lorenzini, Marta, Gandarias, Juan M., Fortini, Luca, Kim, Wansoo, Ajoudani, Arash

论文摘要

平衡和步态障碍是跌倒的第二大原因,随之而来的伤害据报道是世界各地的主要公共卫生问题。对于不需要机械支持的患者,纤维触及反馈界面已被证明是恢复平衡的成功方法。大多数现有策略评估躯干或头部倾斜,速度或足底力,仅限于立场的分析。另一方面,平衡控制的中心是需要在支撑多边形(SP)的可行范围内,站立或进入新的SP(如步行中)保持身体的压力中心(COP)(COP)。因此,本文提出了一项探索性研究,以研究是否可以在步行过程中使用速函反馈来领导人类警察。引入了Ergotac-belt纤维触及式装置,以指示用户在前后轴和中侧轴上的方向。这里采用了一种预期策略,以使用户有足够的时间对刺激做出反应。对十个健康受试者进行的实验证明了该设备沿预定义的参考路径指导用户的COP具有有希望的能力,其性能与视觉反馈相似。未来的发展将调查我们的战略和设备,以指导老年人或前庭障碍的人的警察,他们可能不知道或能够弄清楚安全且人体工程学的COP道路。

Balance and gait disorders are the second leading cause of falls, which, along with consequent injuries, are reported as major public health problems all over the world. For patients who do not require mechanical support, vibrotactile feedback interfaces have proven to be a successful approach in restoring balance. Most of the existing strategies assess trunk or head tilt and velocity or plantar forces, and are limited to the analysis of stance. On the other hand, central to balance control is the need to maintain the body's centre of pressure (CoP) within feasible limits of the support polygon (SP), as in standing, or on track to a new SP, as in walking. Hence, this paper proposes an exploratory study to investigate whether vibrotactile feedback can be employed to lead human CoP during walking. The ErgoTac-Belt vibrotactile device is introduced to instruct the users about the direction to take, both in the antero-posterior and medio-lateral axes. An anticipatory strategy is adopted here, to give the users enough time to react to the stimuli. Experiments on ten healthy subjects demonstrated the promising capability of the proposed device to guide the users' CoP along a predefined reference path, with similar performance as the one achieved with visual feedback. Future developments will investigate our strategy and device in guiding the CoP of elderly or individuals with vestibular impairments, who may not be aware of or, able to figure out, a safe and ergonomic CoP path.

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