Genetic Pathways and Anxiety

Chapter 15-p-sychological disorders is my favorite chapter. The chapter carried out in-depth discussion of different kinds of disorders among various age and cultural backgrounds in general. What I found the most interesting is the underlying genetic pathway for many kinds of anxiety disorders mentioned in the chapter.
The inforamtion explained in the textbook reminded me of my EEG lab class where I learned the increased alpha wave related to optimistic personelity type. With the combination of the information on genetic pathways for anxiety pointed by the book, I would like to figure out if clear evidence could also correlate the genetic pathways to the activities of alpha waves on EEG, in order to support the idea of genetic influences on anxiety.