Published online by Cambridge University Press: 05 May 2015
Parkinson's Disease (PD) is a neurological disorder which appears to be increasing in prevalence in the Asia-Pacific region among the elderly. Although PD is considered by many as a motor syndrome, its physiological basis in dopaminergic pathways has recently been associated with cognitive and neurolinguistic changes. This paper attempts to synthesise the common threads running through clinical and empirical work which has supported a specific cognitive word-finding deficit in PD. Recent computational accounts of the observed deficits are also reviewed as one way of testing theories of PD-like lexical-semantic errors, and generating empirically-testable hypotheses.