| Publication Abstract Display | | Type: Published Abstract | | Title: A differential deficit in time- versus event-based prospective memory in Parkinson`s Disease. | | Authors: Raskin S, Woods SP, Poquette A, McTaggart AB, Sethna J, Williams RC, Troster A | | Year: 2010 | | Publication: Journal of the International Neuropsychological Society | | Volume: Issue: Pages: | | Abstract:Prospective memory has emerged as an important cognitive construct and one that is essential to everyday functioning. Prospective memory is thought to involve cognitive processes that are mediated by prefrontal systems and executive in nature. Given that individuals with Parkinsons disease (PD) frequently show impaired executive functioning, it is important to determine whether these individuals may have deficits in prospective memory that could impact daily functions such as taking medications. Although it has been reported that individuals with Parkinsons disease evidence impairment in prospective memory, it is still unclear whether they show a greater deficit for time- versus event-based cues. The present study investigated prospective memory functioning in individuals with PD and demographically similar healthy adults using a standardized measure of prospective memory that allows for a direct comparison of time-based and event-based cues. In addition, participants were administered a series of standardized measures of retrospective memory and executive functions. Individuals with PD demonstrated impaired prospective memory performance compared to the healthy adults, with a greater impairment demonstrated for the time-based tasks. Time based prospective memory performance was moderately correlated with measures of executive functioning, but only the Stroop Neuropsychological Screening Test emerged as a unique predictor in a linear regression. Findings are interpreted within the context of McDaniel and Einsteins (2000) multi process theory to suggest that individuals with PD experience particular difficulty executing a future intention when the cue to execute the prescribed intention requires higher levels of cognitive control. |
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