Nonlinear effect of biological feedback on brain attentional state

A nonlinear effect of biological feedback on visual perception is studied when a brain–computer interface is applied. The implemented algorithm for estimation of visual attention is based on the time–frequency analysis of human electroencephalograms in real time by measuring the amplitude of the sti...

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Bibliographic Details
Published in:Nonlinear dynamics 2019-02, Vol.95 (3), p.1923-1939
Main Authors: Maksimenko, Vladimir A., Hramov, Alexander E., Grubov, Vadim V., Nedaivozov, Vladimir O., Makarov, Vladimir V., Pisarchik, Alexander N.
Format: Article
Language:English
Subjects:
Amplitudes
Asymmetry
Automotive Engineering
Biological effects
Classical Mechanics
Control
Dynamical Systems
Electroencephalography
Engineering
Fatigue
Feedback control
Human performance
Human-computer interface
Intervals
Mechanical Engineering
Neural networks
Original Paper
Prostheses
Time measurement
Time-frequency analysis
Vibration
Visual perception
Visual perception driven algorithms
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Summary:A nonlinear effect of biological feedback on visual perception is studied when a brain–computer interface is applied. The implemented algorithm for estimation of visual attention is based on the time–frequency analysis of human electroencephalograms in real time by measuring the amplitude of the stimulus-related brain response, which takes subsequently positive and negative values. The analysis shows that time intervals with positive amplitude are associated with periods of sustained attention, whereas time intervals with negative amplitude are related to mental fatigue. The comparison of the results obtained in two groups of subjects, one without feedback and another with feedback, demonstrate that the feedback control prolongs the periods of sustained attention. The largest interval of sustained attention in the former group reached only 100 ± 20 s versus 150 ± 40 s in the latter group. However, the mean degree of attention, estimated by averaging the brain response amplitude over the whole interval, was 27% lower in the group with feedback than in another group. The obtained results evidence that cognitive resource is limited, and therefore, to maintain high performance for prolonged time, the brain has to work in a “safe-mode” regime.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-018-4668-1