Yes, there is a terminology called Sleep study. Not sure how many of them know it. But today its been done across location mostly in US & India. Studies shows that most of them are from the IT and Business sectors who fall in the category.
In Chennai, we have Nithra Institute of Sleep Sciences who specializes in these areas. Dr.N. Ramakrishnan ,AB (Int Med), AB (Crit Care), MMM, FACP, FCCP, FCCM owns this institute.