Title :
Comparison between wire and wireless EEG acquisition systems based on SSVEP in an Independent-BCI
Author :
Tello, Richard M. G. ; Müller, Sandra M. T. ; Bastos-Filho, Teodiano ; Ferreira, Andre
Author_Institution :
Post-Grad. Program of Electr. Eng., UFES, Vitoria, Brazil
Abstract :
This paper presents a comparison between two different technologies of acquisition systems (BrainNet36 and Emotiv Epoc) for an Independent-BCI based on Steady-State Visual Evoked Potential (SSVEP). Two stimuli separated by a viewing angle <; 1° were used. Multivariate Synchronization Index (MSI) technique was used as feature extractor and five subjects participated in the experiments. The class is obtained through a criterion of maxima. The left and right flicker stimuli were modulated at frequencies of 8.0 and 13.0 Hz, respectively. Acquisition via BrainNet system showed better results, obtaining the highest value for accuracy (100%) and the highest ITR (35.18 bits/min). This Independent-BCI is based on covert attention.
Keywords :
brain-computer interfaces; electroencephalography; feature extraction; medical signal processing; visual evoked potentials; BCI; SSVEP; acquisition systems; brain computer interfaces; brainnet system; feature extractor; frequency 13.0 Hz; frequency 8.0 Hz; high ITR; left flicker stimuli; multivariate synchronization index technique; right stimuli; steady-state visual evoked potential; wireless EEG acquisition systems; Accuracy; Brain-computer interfaces; Electrodes; Feature extraction; Indexes; Synchronization; Visualization;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/EMBC.2014.6943519
