Medical & Biological Engineering & Computing

, Volume 52, Issue 12, pp 1007–1017 | Cite as

Motor imagery, P300 and error-related EEG-based robot arm movement control for rehabilitation purpose

  • Saugat Bhattacharyya
  • Amit Konar
  • D. N. Tibarewala
Original Article


The paper proposes a novel approach toward EEG-driven position control of a robot arm by utilizing motor imagery, P300 and error-related potentials (ErRP) to align the robot arm with desired target position. In the proposed scheme, the users generate motor imagery signals to control the motion of the robot arm. The P300 waveforms are detected when the user intends to stop the motion of the robot on reaching the goal position. The error potentials are employed as feedback response by the user. On detection of error the control system performs the necessary corrections on the robot arm. Here, an AdaBoost-Support Vector Machine (SVM) classifier is used to decode the 4-class motor imagery and an SVM is used to decode the presence of P300 and ErRP waveforms. The average steady-state error, peak overshoot and settling time obtained for our proposed approach is 0.045, 2.8 % and 44 s, respectively, and the average rate of reaching the target is 95 %. The results obtained for the proposed control scheme make it suitable for designs of prosthetics in rehabilitative applications.


Brain–computer interfacing Motor imagery P300 Error-related potential Position control of robot arm Electroencephalography 



I would like to thank University Grants Commission, India, University of Potential Excellence Programme (Phase II) in Cognitive Science, Jadavpur University and Council of Scientific and Industrial Research, India.


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Copyright information

© International Federation for Medical and Biological Engineering 2014

Authors and Affiliations

  • Saugat Bhattacharyya
    • 1
  • Amit Konar
    • 2
  • D. N. Tibarewala
    • 1
  1. 1.School of Bioscience and EngineeringJadavpur UniversityKolkataIndia
  2. 2.Department of Electronics and Telecommunication EngineeringJadavpur UniversityKolkataIndia

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