I had subarachnoid brain hemorrhage and attendant concussion. My medical records show that I was using my blackberry (it was 2009!) while in ICU. And I never stopped tapping, typing and texting ever since. My advice- as a layman not a doctor or health care professional —is perhaps do something that helps eye hand coordination. Such movements have been shown to affect brain. Also keep hydrated. Foggy brain, memory lapse, even unsteadiness have been attributed to dehydration. Just some thoughts. Wishing you a complete healing.