Chapter Ten. Phonological Encoding In Healthy Aging: Electrophysiological Evidence

TL;DRAbstract

Research on language production in older adults with unimpaired cognitive abilities suggests that the naming problems associated with advanced age arise in, or just before, the phonological stage. Various theories as to why there are lexical access difficulties have been proposed. This chapter provides a neurolinguistic basis for understanding phonological encoding breakdowns in speech production in older persons using evidence from an electrophysiological study of substages of phonological encoding in healthy aging. Levelt and colleagues have constructed a model of spoken word recognition that provides the theoretical framework for this research. There are various substages of phonological encoding according to this model. Event-related potentials (ERP) studies thus far have focused on the timing and the order of conceptual, semantic, syntactic and phonological encoding stages. Keywords: electrophysiological study; Event-related potentials (ERP); healthy aging; phonological encoding

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