Abstract:
:We investigated the incidental and intentional learning performance of 29 patients with idiopathic Parkinson's disease (PD) and 20 healthy volunteers. Measures of incidental and intentional memory were assessed with a spoken verbal recall task followed by a temporal word order task, a picture recall task followed by a spatial picture location task, and a written word recall task followed by a judgement of word frequency task. A multivariate analysis of variance and appropriate post hoc tests revealed significant differences for all intentional learning variables. In all cases, PD patients performed worse than normal controls. No group differences were found for the incidental retention of contextual information. The results indicate that PD patients have a selective problem of intentional learning, whereas incidental learning of contextual information remains intact. Elaborate processing, attentional and organizing strategies in the systematic encoding, and recollection of information have been attributed to dorsolateral prefrontal activation. Preferential dysfunction of dorsolateral prefrontal cortex-associated memory processes is consistent with the previously reported uneven patterns of dopamine loss in the striatum of patients with idiopathic PD showing most severe dopamine depletion in the portion of the caudate nucleus that is anatomically connected to the dorsolateral frontal cortex.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Vingerhoets G,Vermeule E,Santens Pdoi
10.1016/j.neuropsychologia.2004.09.003subject
Has Abstractpub_date
2005-01-01 00:00:00pages
675-81issue
5eissn
0028-3932issn
1873-3514pii
S0028-3932(04)00236-2journal_volume
43pub_type
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