Abstract
Subjects with amyotrophic lateral sclerosis (ALS) consistently experience decreasing quality of life because of this distinctive disease. Thus, a practical brain-computer interface (BCI) application can effectively help subjects with ALS to participate in communication or entertainment. In this study, a fuzzy tracking and control algorithm is proposed for developing a BCI remote control system. To represent the characteristics of the measured electroencephalography (EEG) signals after visual stimulation, a fast Fourier transform is applied to extract the EEG features. A self-developed fuzzy tracking algorithm quickly traces the changes of EEG signals. The accuracy and stability of a BCI system can be greatly improved by using a fuzzy control algorithm. Fifteen subjects were asked to attend a performance test of this BCI system. The canonical correlation analysis (CCA) was adopted to compare the proposed approach, and the average recognition rates are 96.97% and 94.49% for proposed approach and CCA, respectively. The experimental results showed that the proposed approach is preferable to CCA. Overall, the proposed fuzzy tracking and control algorithm applied in the BCI system can profoundly help subjects with ALS to control air swimmer drone vehicles for entertainment purposes.
Highlights
Amyotrophic lateral sclerosis (ALS) attacks the motor neurons
A second-order Butterworth band-pass filter was used to remove the signals with frequencies bits
A fuzzy tracking and control algorithm was successfully developed for a single-channel state visual evoked potential (SSVEP)-based brain-computer interface (BCI) system
Summary
Amyotrophic lateral sclerosis (ALS) attacks the motor neurons. ALS critically reduces their motor abilities; they experience difficulties in performing daily activities, such as participating in entertainment activities. In recent years, an extensive range of high technology assistive devices have been developed to fulfill the needs of these individuals. These assistive devices can help these patients perform daily activities such as eating, communicating, and moving from place to place. Assistance in performing daily activities is essential, the psychological effects of nonessential patient activities such as entertainment should be considered. The development of a brain-computer interface (BCI) application for entertainment is worthwhile for subjects with ALS
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