Sensory perception in old age may be linked to cognition, UCSF study shows.

Researchers at UC Davis are studying whether a personalized list of favorite songs reduces dementia patients' need for medication.

Prions, long studied by UCSF professor and Nobel laureate Stanley Prusiner, build up in the brain to cause Alzheimer's and other dementias. Now they're linked to post-traumatic stress disorder in combat veterans and in the brain damage of athletes who have suffered repeated concussions.