You are lucky...
Oliver Sacks taught us a lot because neurological problems may be very specific in individual case and impossible to describe if not by a mini novel describing the patient life ... I admire him and his books are very precious to me...
the episode you alluded to was put in movie which i will remember with his book forever...
When I was in medical school, we did our neurology at Montefiore Hospital in the Bronx, where I think Oliver Sachs was on staff and where work was done using dopamine to treat “frozen” Parkinson’s Disease patients, who were at that time thought to have a form of chronic encephalitis associated with the 1918 Spanish flu pandemic.