Optimized EEG Classification Accuracy of Motor-Imaginary Motions using Genetic Algorithms

Kaushik Bhimraj, Andrew Kalaani, Justin McCorkle, Rami J. Haddad

Research output: Contribution to book or proceedingConference articlepeer-review

Abstract

Electroencephalography (EEG) based brain-computer interface (BCI) systems are rapidly being investigated for use in biomedical applications due in part to them being relatively inexpensive and minimally intrusive. These interfaces are useful for systems that users can input data and get stimuli as outputs. However, there is a significant drawback in that EEG signals can be easily contaminated from other brain activity not pertaining to the task at hand. If too much contamination exists, the signal could be miscategorized and lead to errors or undesirable outputs for the user. In this paper, we are using a genetic algorithm to optimize the 10-20 electrode system for each user to minimize contamination and maximize the classification accuracy of an artificial neural network classifier. This was accomplished by using a neural network on each electrode to classify its signal into one of three imaginary motions. Afterward, all the electrode classifications were fused using a majority voting fusion algorithm. A genetic algorithm was then guided by the results to identify which electrodes will increase accuracy. The average accuracy for the three subjects attained by the genetic algorithm was 84.34%.

Original languageEnglish
Title of host publication2019 IEEE SoutheastCon, SoutheastCon 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728101378
DOIs
StatePublished - Apr 2019
Event2019 IEEE SoutheastCon, SoutheastCon 2019 - Huntsville, United States
Duration: Apr 11 2019Apr 14 2019

Publication series

NameConference Proceedings - IEEE SOUTHEASTCON
Volume2019-April
ISSN (Print)1091-0050
ISSN (Electronic)1558-058X

Conference

Conference2019 IEEE SoutheastCon, SoutheastCon 2019
Country/TerritoryUnited States
CityHuntsville
Period04/11/1904/14/19

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