Dupan Sigrid S G, McNeill Zachary, Brunton Emma, Nazarpour Kianoush
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:3885-3888. doi: 10.1109/EMBC44109.2020.9176472.
The incorporation of sensory feedback in prosthetics can lead to a range of benefits, such as improved hand control, increased prosthesis embodiment, and the reduction of phantom limb pain. However, the creation of reliable sensory feedback is complicated by the temporal modulation of the nervous system. Sensory fibres in the hand are primed to react to changing conditions, firing when discrete mechanical events occur. In this study, we investigate the minimal possible stimulation needed to distinguish different sensory patterns that can be used to indicate events. We presented a two-alternative forced-choice task of transcutaneous electrical nerve stimuli to 10 participants. The results showed that different stimuli can be distinguished when double pulses have an inter-stimulus-interval of 10 ms. Additionally, providing a pause of at least 350 ms between stimuli increases the discrimination of the perception. These results suggest that humans can distinguish different patterns of transcutaneous electrical nerve stimulation with as little as two stimuli, illustrating the possibility of providing event-related stimulation.
将感觉反馈整合到假肢中可带来一系列益处，例如改善手部控制、增强假肢的实体感以及减轻幻肢痛。然而，可靠的感觉反馈的创建因神经系统的时间调制而变得复杂。手部的感觉纤维准备好对变化的条件做出反应，在离散的机械事件发生时放电。在本研究中，我们调查了区分可用于指示事件的不同感觉模式所需的最小可能刺激。我们向10名参与者呈现了经皮电神经刺激的二选一强制选择任务。结果表明，当双脉冲的刺激间隔为10毫秒时，可以区分不同的刺激。此外，在刺激之间提供至少350毫秒的停顿可增强感知的辨别力。这些结果表明，人类仅用两个刺激就能区分不同模式的经皮电神经刺激，说明了提供与事件相关刺激的可能性。
