Scott Timothy R D, Vare Veronica A
Quadriplegic Hand Research Unit, The Spinal Cord Injuries Unit, Royal North Shore Hospital, St Leonards, NSW, 2065, Australia,
Med Biol Eng Comput. 2015 Jun;53(6):511-23. doi: 10.1007/s11517-015-1255-1. Epub 2015 Mar 6.
Sensitivity analysis for a user command controller monitoring head position for artificial control of the proximal upper limb was performed. The controller was evaluated by having subjects complete target matching tasks manipulating a simulated on-screen hand representation to investigate the effects of target location and target speed on performance. Sixteen subjects took part in the study, 11 of whom had sustained cervical spinal cord injuries. The subjects were able to control the on-screen hand with overall low sensitivity of performance with the controller to target position in its five-degrees-of-freedom. The optimal speed was found to be a compromise between low speed and high accuracy but longer completion time and fast speed for short completion time with lower accuracy. The results demonstrated the robustness of the controller across a population of non-injured subjects and those with tetraplegia.
对用于人工控制上肢近端的用户命令控制器进行了灵敏度分析，该控制器通过监测头部位置来实现。通过让受试者完成目标匹配任务来评估该控制器，任务内容是操作屏幕上模拟的手部表示，以研究目标位置和目标速度对性能的影响。16名受试者参与了该研究，其中11人曾遭受颈脊髓损伤。受试者能够以总体较低的性能灵敏度控制屏幕上的手部，该控制器在其五个自由度上对目标位置的灵敏度较低。发现最佳速度是低速与高精度之间的折衷，但完成时间较长，而高速则可缩短完成时间，但精度较低。结果表明，该控制器在非受伤受试者群体和四肢瘫痪受试者群体中均具有稳健性。
