Table 2.

Summary of SD case reports with known areas of premorbid expertise

Expertise	Study	Knowledge retained?	AOA	Ongoing exposure?
Artist	Robinson & Cipolotti, 2001	✓	early?	yes
Car enthusiast	Current study	✓? impaired relative to expert controls	early	yes
Trumpter	Omar et al. 2010	✓? preserved musical notation and note names; poor naming of famous tunes	early?	yes
Botanist	Current study	✓? good knowledge of parts of plants (though poor naming)	early	yes?
Surgeon	Graham et al, 1999	✘	late	no
Bowls player	Graham et al, 1997	✘ poor knowledge of bowls vocabulary	late	yes
Golfer	Graham et al, 1997	✘ poor knowledge of golf vocabulary	late	yes

AOA = age-of-acquisition. Early = known childhood interest in domain of expertise. ‘Early?’ denotes that early expertise is likely although unconfirmed in the case reports.