IEEE Consumer Electronics Magazine - March 2018 - 10

detection in images, e.g., bounding
boxes around objects of interest were
provided to machine-learning algorithms. The additional data could boost
the performance. Team Vostok studied
the ability of BCI to provide groundtruth information. The straightforward
approach using special control tools
(like the keyboard or mouse) was found
not suitable for the proposed technology
when human attention could not be distracted from the task. Pupil-tracking systems needed additional devices, which
were not appropriate either, for persons
with severe oculomotor impairments
who could only rely on the gaze direction, with no peripheral vision.

Team Vostok chose a data set by
Tredel et al. (2011) [2] to investigate
whether different directions of attention
shifts could be reliably differentiated
based on EEG without eye movement.
During the experiments, participants
had to shift their attention zone into a
specified area where the target appeared
and then classify its type by pressing a
button. Tredel's data contained 600 trials for each of eight healthy participants, and 62 channels (60 EEG and
two electro-oculogram) were recorded.
Relying on the data set, a novel classification system was constructed that recognized the direction of covert shift of
attention. MATLAB, EEGLAB, and

EEG-processing tool box were applied
for these purposes.
The classification process involves preprocessing, feature extraction, and classification. Team Vostok formed learning
samples from EEG signals in the 450-
1,800-ms time interval of each trial. Preprocessing consisted of the following steps:
▼▼ Extracting channels attached to the
occipital and occipital-parietal cortex
(4, 7-10, Oz, 1, 2). According to their
experiments, the use of PO 3 does
not increase the overall classification accuracy.
▼▼ Applying a second-order Butterworth
filter with a cutoff frequency of 5 Hz
and a higher cutoff frequency of 15 Hz.

fiGURE 4. Dr. N. Nan Chu presenting a webinar the keynote,
tutorial, and BDB Challenge judge comments, locally facilitated
by Eugene Shelepin, RAS.

fiGURE 6. Team 1.1.1.1.1 working on the open-source package
for easy BDB user interface and analytics tools. From left: Petr
Vasiliev, Olga Vakhrameeva, and Anna Stetsenko. Not shown is
the team presenter, Evgeny Blagoveshchensky.

fiGURE 5. The first-place team, Team NeuroImaging, HSE. From
left: Nicolai Smetanin, Sacha Kuznetsova, Prof. Yury Shelepin, and
Dimitrii Altukhov. Their project title was Multiuser BCI.

fiGURE 7. Team Vostok working their its hours on brain data validation and labeling on 26 June 2017. From left: Galina Moiseenko, Roman Malashin, and Svyatoslav Ponomarev.

10 IEEE Consumer Electronics Magazine

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march 2018



Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - March 2018

Contents
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