Analysis of the changes in the distinguishing features inelectroencephalogram signal processing for heroin addicts

Heroin is a highly addictive drug with devastating effects on various parts of the body, including the digestive system, nervous system, and mental health, and it can lead to premature death. One of the destructive impacts of heroin use is on the brain. Electroencephalogram (EEG) indicate the brain's activity in the physiological and psychological states of heroin addict. Identifying distinguishing features is crucial for processing these signals and determining the differences between the EEG of healthy individuals and addicts. The frequency and time domain features extracted from different channels of EEG vary, but identifying distinguishing features can aid in better analysis of these signals. This article uses the Davies-Bouldin criterion to determine distinguishing frequency and time domain features. EEG of Heroin addict (15 individuals) and healthy individuals (15 individuals) were extracted from 16 different channels. The distinguishing feature with the lowest Davies-Bouldin index value was selected. The results of this study show that in people addicted to heroin, the frequency power spectrum in the upper alpha subband of the O1 channel has decreased. Also, approximate entropy is increased in the Cz channel of heroin addicts. To evaluate the distinguishing features, the support vector machine classification has been used to distinguish the addict from the healthy person. The accuracy and accuracy of distinguishing an addicted person from a healthy person in the approximate entropy feature is 91.50 and 91.81%, and in the power spectrum feature in the upper alpha subband of O1 channel, it is 95.92 and 92.40%, respectively. Compared to other researches, the obtained results confirm the distinction and superiority of the features in terms of precision and accuracy. According to the results, the analysis of frequency and time domain features of brain signals can help to better understand the effects of heroin consumption on brain activity. This study can help to provide solutions to improve the treatment and prevention of heroin addiction.