Researchers have discovered that "cyber-ostracism" by strangers elicits increased activity in the anterior cingulate cortex. If a stranger experience cyber-ostracism that means that they have been excluded or have excluded someone which could create emotions of bitterness or loneliness, superiority. The anterior cingulate cortex controls human emotions, so it would be responsible for the making the stranger experience any feelings that occurs during cyber-ostracism.
