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Computational Intelligence and Neuroscience
Volume 2016, Article ID 4069790, 11 pages
Research Article

Volitional and Real-Time Control Cursor Based on Eye Movement Decoding Using a Linear Decoding Model

State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xian Jiaotong University, Xian, 710049, China

Received 2 July 2016; Revised 18 September 2016; Accepted 27 October 2016

Academic Editor: Mikhail A. Lebedev

Copyright © 2016 Jinhua Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this study is to build a linear decoding model that reveals the relationship between the movement information and the EOG (electrooculogram) data to online control a cursor continuously with blinks and eye pursuit movements. First of all, a blink detection method is proposed to reject a voluntary single eye blink or double-blink information from EOG. Then, a linear decoding model of time series is developed to predict the position of gaze, and the model parameters are calibrated by the RLS (Recursive Least Square) algorithm; besides, the assessment of decoding accuracy is assessed through cross-validation procedure. Additionally, the subsection processing, increment control, and online calibration are presented to realize the online control. Finally, the technology is applied to the volitional and online control of a cursor to hit the multiple predefined targets. Experimental results show that the blink detection algorithm performs well with the voluntary blink detection rate over . Through combining the merits of blinks and smooth pursuit movements, the movement information of eyes can be decoded in good conformity with the average Pearson correlation coefficient which is up to , and all signal-to-noise ratios are greater than . The novel system allows people to successfully and economically control a cursor online with a hit rate of .