Characteristics of Right Brain:
Looks at wholes
This part is more interested in challenge, risk, new ideas, imagination, and whole picture.
While going through a web page, do the above brain characteristics influence the visitors, as to how to gather the information, navigate the page, put remarks, product analysis, loyalty as well as time given to the site etc.
At all those factors influence the usability or not.
I don’t know whether research works have already done or not.
If not then Usability analysts and web researchers could think of the brain thinking factors to enrich the search marketers and SEO professionals with research outcomes.