Long-term Declarative Memory in Parkinson Although, Parkinson's disease (PD) often leads to dementia, PD patients who do not develop dementia still show deficits in long-term memory (Kensinger, Shearer, Locascio, Growdon, and Corkin, 2003; Sagar, Sullivan, Gabrieli, Corkin, and Growdon, 1988). There is strong consensus that recall memory is impaired in nondemented PD patients (Brown and Marsden, 1990; Cooper, Sagar, Sullivan, 1993; Sahakian, 1988), but the status of recognition memory is controversial. Recognition memory is subserved by two processes according to dual-process models of memory: a) recollection - a vivid, clear memory of an item with the contextual details associated with it (subserved by prefrontal cortex, parietal cortex, and hippocampus proper), and b) familiarity - an intuitive feeling that the stimulus has been encountered recently without
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