She argues that social epidemics are driven in large part by the actions of a tiny minority of special individuals, often called influentials, who are unusually informed , persuasive , or well connected. 请问老师，often called influentials.
这句话是插入语吗？插入语中的非谓语可以修饰主句中的名词吗？不是说插入语是补充成分，可以先去掉不看吗？还有informed or well connected 这几个词为何不可以理解为被动而是要当作形容词去看呢？
不可以一见到逗号就觉得是插入语。这里often called influentials是过去分词短语作非限制性定语，当然是修饰名词了。
