In addition to the initial training required by section 38-521, an audiology or speech-language pathology assistant assigned to provide aural rehabilitation programs shall have additional training which shall include, but not be limited to:
(1) Information concerning the nature of hearing loss;
(2) Purposes and principles of auditory and visual training;
(3) Maintenance and use of amplification devices; and
(4) Such other subjects as the department may deem appropriate.