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Proceedings ArticleDOI

Single trial independent component analysis for P300 BCI system

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TLDR
A single trial independent component analysis (ICA) method that is working with a BCI system proposed by Farwell and Donchin can dramatically reduce the signal processing time and improve the data communicating rate.
Abstract
A Brain Computer Interface (BCI) is a device that allows the user to communicate with the world without utilizing voluntary muscle activity (i.e., using only the electrical activity of the brain). It makes use of the well-studied observation that the brain reacts differently to different stimuli, as a function of the level of attention allotted to the stimulus stream and the specific processing triggered by the stimulus. In this article we present a single trial independent component analysis (ICA) method that is working with a BCI system proposed by Farwell and Donchin. It can dramatically reduce the signal processing time and improve the data communicating rate. This ICA method achieved 76.67% accuracy on single trial P300 response identification.

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Citations
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Proceedings ArticleDOI

An improved P300 extraction using ICA-R for P300-BCI speller

TL;DR: A new P300 extraction method is investigated by using a form of constrained independent component analysis (cICA) algorithm called one-unit ICA-with-reference (ICA-R) which extracts the P300 signal based on its temporal information.
Proceedings ArticleDOI

Comparison of EEG blind source separation techniques to improve the classification of P300 trials

TL;DR: This paper provides a comparison of several blind source separation techniques as they are applied to EEG signals and analyzes the effect of adding temporal information to the original data, which allows these BSS algorithms to find more complex spatio-temporal patterns.
Proceedings ArticleDOI

A genetic algorithm for single-trial P300 detection with a low-cost EEG headset

TL;DR: A genetic algorithm (GA) is used in combination with both a neural network and linear discriminant analysis classifiers to improve single-trial P300 detection and explore the results of those features found influential on P300 classification.
Journal ArticleDOI

Human-in-the-loop active learning via brain computer interface

TL;DR: This work is proof of concept for the effectiveness of involving humans in the computer’s learning stage, i.e., human-in-the-loop as opposed to the traditional method of humans first tagging the data and the machines then learning and creating a model.
Proceedings ArticleDOI

Deep convolutional neural network based character detection in devanagari script input based P300 speller

TL;DR: DCNN, a one of the powerful tool, has adopted in this work to classify the target and non-target p300 components from acquired EEG signal and results illustrated that the proposed technique has achieved 94.18% accuracy for P300 detection, higher than existing techniques.
References
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Independent component analysis: algorithms and applications

TL;DR: The basic theory and applications of ICA are presented, and the goal is to find a linear representation of non-Gaussian data so that the components are statistically independent, or as independent as possible.
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Talking off the top of your head: toward a mental prosthesis utilizing event-related brain potentials

TL;DR: The analyses suggest that this communication channel can be operated accurately at the rate of 0.20 bits/sec, which means that subjects can communicate 12.0 bits, or 2.3 characters, per min.
Journal ArticleDOI

Blind beamforming for non-gaussian signals

TL;DR: In this paper, a computationally efficient technique for blind estimation of directional vectors, based on joint diagonalization of fourth-order cumulant matrices, is presented for beamforming.
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It can dramatically reduce the signal processing time and improve the data communicating rate.