G. Miceli et al., Selective deficit for people's names following left temporal damage: An impairment of domain-specific conceptual knowledge, COGN NEUROP, 17(6), 2000, pp. 489-516
As a consequence of a head trauma, APA presented with selective anomia for
the names of familiar people, in the absence of comparable disorders for co
mmon names and other proper names. Face recognition was normal; and naming
performance was unaffected by stimulus and response types. Selective proper
name anomia was not due to effects of frequency of usage or of age of acqu
isition, or to selective memory/learning deficits for the names of people.
Even though APA was able to provide at least some information on many celeb
rities whom she failed to name, she was clearly impaired in all tasks that
required full conceptual information on the same people (but she performed
flawlessly in similar tasks that involved common names). This pattern of pe
rformance indicates that in our subject the inability to name familiar pers
ons results from damage to conceptual information. It is argued that detail
ed analyses of conceptual knowledge are necessary before it is concluded th
at a subject with proper name anomia suffers from a purely output disorder,
as opposed to a conceptual disorder. The behaviour observed in APA is cons
istent with the domain-specific hypothesis of conceptual organisation (Cara
mazza & Shelton, 1998), and in this framework can be explained by assuming
selective damage to knowledge of conspecifics. The anatomo-clinical correla
tes of our subject's disorder are discussed with reference to recent hypoth
eses on the neural structures representing knowledge of familiar people.