Thank you for posting your query.
I can understand the seriousness of injury your husband has suffered.
Based on your description, he has suffered a severe brain injury
with dysfunction of cerebral cortex
Following investigations may be useful in determining the prognosis for a good neurological recovery:
2. Evoked potential studies,
3. PET-CT scan
You can get the tests done at the current hospital, and meet the doctors at the other hospital for a second opinion
I hope it helps.
Please get back if you require any additional information.
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad,
My personal URL on this website: http://bit.ly/Dr-Sudhir-kumar
My email: firstname.lastname@example.org