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Computer-aided training sensorimotor cortex functions in humans before the upper limb transplantation using virtual reality and sensory feedback
آموزش کارکرد پوسته ی حسی در انسان قبل از پیوند اندام فوقانی با استفاده از واقعیت مجازی و بازخورد حسی-2017 One of the biggest problems of upper limb transplantation is lack of certainty as to whether a patient will be able
to control voluntary movements of transplanted hands. Based on findings of the recent research on brain cortex
plasticity, a premise can be drawn that mental training supported with visual and sensory feedback can cause
structural and functional reorganization of the sensorimotor cortex, which leads to recovery of function associated
with the control of movements performed by the upper limbs. In this study, authors – based on the above observations
– propose the computer-aided training (CAT) system, which generating visual and sensory stimuli,
should enhance the effectiveness of mental training applied to humans before upper limb transplantation. The
basis for the concept of computer-aided training system is a virtual hand whose reaching and grasping movements
the trained patient can observe on the VR headset screen (visual feedback) and whose contact with virtual objects
the patient can feel as a touch (sensory feedback). The computer training system is composed of three main
components: (1) the system generating 3D virtual world in which the patient sees the virtual limb from the
perspective as if it were his/her own hand; (2) sensory feedback transforming information about the interaction of
the virtual hand with the grasped object into mechanical vibration; (3) the therapists panel for controlling the
training course. Results of the case study demonstrate that mental training supported with visual and sensory
stimuli generated by the computer system leads to a beneficial change of the brain activity related to motor
control of the reaching in the patient with bilateral upper limb congenital transverse deficiency Keywords:Brain plasticity | Computer-aided mental training | Visual feedback | Sensory feedback | Virtual upper limb |
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