نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 دانشجوی دکترای مهندسی پزشکی، گروه بیوفناوری، پردیس علوم و فناوریهای نوین، دانشگاه سمنان، سمنان، ایران
2 دانشیار، گروه مهندسی پزشکی، دانشگاه سمنان، سمنان، ایران
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
In recent years, the idea of using brain-computer interface systems in practical areas to solve movement and communication limitations of people with disabilities has been considered. In this study, a BCI system based on steady state visual evoked potential to control the model of one degree of freedom of elbow joint with functional electrical stimulation, has been implemented. Stimulation was presented to the subject through 9 optical stimuli and the signals was recorded from the occipital lobe from , and electrodes. Excitation frequency recognition is performed using the CCA method and the joint angle is determined. The extracted angle is sent to the fuzzy controller as input. The musculoskeletal system in MATLAB software is simulated as two links and a revolute joint on a transverse plane using the Zajac model for biceps and triceps muscles. Fuzzy controller according to the desired angle, applies electrical stimulation to muscle. The frequency recognition accuracy for the 3-second time window with a latency of 0.4 seconds was 100%. Also, the RMSE value elbow joint angle was equal to 0.17 degrees. The performance of real-time system for 10 healthy individuals showed that all subjects were able to successfully complete the task.
کلیدواژهها English