Event-related potentials as indicators of repetition priming in young and older adults: amplitude, duration, and scalp distribution.

Abstract

Event-related brain potentials (ERPs) were recorded in young and older adults in an indirect repetition priming paradigm. Compared with the young adults, the older adults' ERP repetition effect was larger and of longer duration, due entirely to greater amplitude elicited by the repeated item. These data suggest that, although indirect memory (as indexed by a robust ERP repetition effect) appeared to be intact in the older adult, the possibility exists for qualitative age-related differences consistent with inefficient and/or additional processing of the repeated item.