Investigation of the Effect of Explosion on EEG Signals of Blasting Employees

Abstract

In this paper blasting employees’ brain response to explosion sound were investigated, using Electroencephalography (EEG) signals. The protocol of emplacement of eight electrodes was designed for gathering the signals from different sensations e.g. motor, speech, somatosensory, auditory and visual. Routine EEG signals, and also along with explosion sound were recorded. Explosion sound broadcasted without announcement. Exemplars were 10 people, half of them university staff, who have not faced with explosion, and rest blasting employees. Extracted features were gradient and time duration of Delta band of EEG signals. Studies showed that for blasting employees, an increase of mean amplitude of delta band power of EEG signals of motor, speech and visual sensations were occurred; while in the case of university staff, it has been decreased. This shows that those consciousness of blasting employees arises as soon as hearing explosion sound. The reaction of somatosensory and auditory senses were dropped for almost all exemplars. In general, there was not main difference between reaction time of blasting employees with university staff, except speech and auditory sensations, which the reaction of university staff was faster.

Keywords

• consciousness level
• electroencephalography (eeg) signals
• explosion sound
• reaction time
• signal gradient