Retrieving familiar people's names in patients with severe closed-head injuries

Patients with closed-head injury frequently complain about difficulties with retrieving the names of familiar people, but very few studies have investigated these complaints by objective measurements. Three experiments are reported that compared personal name retrieval in patients with severe closed-head injuries and normal controls. The patients more frequently failed to produce the names of famous persons, and had longer naming latencies than the controls. Accuracy of recognizing familiar persons was normal in the patients, even though they were slower in this task than the controls. The patients' main problem appeared to involve a disturbance in activating the stored name information. The patients' response pattern shows clear resemblance with simulations of the effects of brain damage in models for person naming.