This study investigates the effect of haptic control strategies on a subject's mental engagement during a fine motor handwriting rehabilitation task. The considered control strategies include an error-reduction (ER) and an error-augmentation (EA), which are tested on both dominant and non-dominant hand. A non-invasive brain-computer interface is used to monitor the electroencephalogram (EEG) activities of the subjects and evaluate the subject's mental engagement using the power of multiple frequency bands (theta, alpha, and beta). Statistical analysis of the effect of the control strategy on mental engagement revealed that the choice of the haptic control strategy has a significant effect (p < 0.001) on mental engagement depending on the type of hand (dominant or non-dominant). Among the evaluated strategies, EA is shown to be more mentally engaging when compared with the ER under the non-dominant hand.
翻译:翻译摘要:
本研究调查了在一项手写康复任务中,触觉控制策略对受试者在任务中的精神投入的影响。考虑的控制策略包括减少误差(ER)和增加误差(EA),并测试其在主手和非主手上的效果。采用一种非侵入性的脑-计算机接口来监测被试者的脑电图(EEG)活动,并利用多个频段的功率(theta,alpha和beta)来评估受试者的精神投入。对控制策略对精神投入的影响进行的统计分析表明,控制策略的选择会对精神投入产生显着影响(p <0.001),具体取决于手的类型(主手或非主手)。在评估的策略中,相对于非主手下的ER,EA显示出更高的精神投入。