The effects of delay time elements in myoelectric prosthetic hand

One of the important factors of this system is that the prosthetic hand could respond to the amputee´s intensions within the time which don´t cause the failure of task. But myoelectric prosthetic hand has many element of delay time in each component. In this paper, the acceptable delay time in myoelectric prosthetic hand is validated by two kinds of time critical tasks execution with various conditions: catch ball task and target grasp in fMRI environment. By the catch ball task, rapid response to the estimated intension is not necessary lead to the good performance and by fMRI analysis, only short response time could be satisfy the simultaneous activated regions.