Extraction of Brain Signal during Motor Imagery Task for Wheelchair Control Command
2017
Paralysis is a disease that causes loss of function from one or more muscle.When someone is paralyzed, the brain still works to obtain information about body activities.While doing or imagining movement, the similar response occurs in the brain.The purpose of this study was to detect any change the value of Event Related Desynchronization/Event Related Synchronization (ERD/ERS) during event.Time-frequency domain analysis was used to determine the frequency dominant when it occurred.This information would be used as a Band Pass Filter for calculating the value of ERD/ERS.In this research, EEG signals were acquired from channel C3, C3-F3, C4, and C4-F4 base on international system 10/20 from EEG.The findings show that the range of frequency dominant from selected channels on all subject is 8-12Hz.The value of ERD/ERS was changed 64.43% in channel C3 and 60% in channel C3-F3 whereas in channel C4 was 64.43% and 66.67% in channel C4-F4.The change of value of ERD/ERS would be used as control command for wheelchair in the next research topic.